Product Details
Sizing & Fit
Installation Guide
FAQs
ReviewsFlap Dimensions:
6"w x 11"h
The entry way your dog goes through.Overall Panel Width
10 3/16"
How wide your panel is.
Step-Over Height
3” - 5”
The distance from the bottom of the panel to the bottom of your flap.Endura Flap Dual Pane Glass Thermo Panel 3e
- Insulated dog door for sliding glass doors with widths from 11-1/4"to 17-1/4"
- 1/2" clear, insulated, dual pane Low E safety glass for max energy efficiency
- Energy-efficient flap withstands extreme weather and winds up to 50 mph
- Easy, removable installation without permanent alterations, perfect for renters
- Adjustable height and available in white, black, and brushed aluminum
Made to Order | Ships in 3-5 Weeks | Custom Order Are Non-Returnable
Superior Weather Resistance
Great for Renters
Easy Installation
Product Details
-
Premium design: The Endura Flap Dual Pane Glass Thermo Panel 3e is a high-quality dog door, specifically crafted for aluminum sliding glass doors
- Energy efficiency: The 1/2" clear, insulated, dual pane Low E safety glass, and insulated flap contribute to reduced energy consumption and improved home insulation
- Weather resistant: The energy-efficient flap remains flexible in temperatures from -40°F to 110°F and resists winds up to 50 mph
- Simple installation: The spring-loaded top allows for easy installation and removal, making it ideal for renters or vacation homes
- Versatile fit: Designed to fit most sliding glass doors with a track width minimum of 1", and adjustable height for a perfect fit
- Secure and safe: Locking cover and C-Clamp lock provide added security, ensuring peace of mind for you and your pet
- Customizable: Available in white, black, and brushed aluminum to suit your home's interior design, with custom sizing options available
- Durable materials: Constructed with an architectural extruded aluminum frame and a polyolefin polymer flap for long-lasting performance
- Comfort for your pet: The adjustable step-over height can be tailored to your pet's size for comfortable entry and exit
- Positive feedback: Highly praised for its ease of installation, energy efficiency, and ability to withstand various weather conditions
- Long-lasting quality: The sturdy design, including a flap that rotates on a rod, ensures durability and reduced wear and tear
- Made in the USA: Designed and engineered in the United States, ensuring top-quality construction and performance
Size Chart
- Small 6"w x 11"h
- Medium 8"w x 15"h
- Large 10"w x 19"h
- Extra Large 12"w x 23"h
Flap Dimensions:
8"w x 15"h
The entry way your dog goes through.Overall Panel Width
12 1/4"
How wide your panel is. Step-Over Height
3” - 5”
The distance from the bottom of the panel to the bottom of your flap.Flap Dimensions:
10"w x 19"h
The entry way your dog goes through.Overall Panel Width
14 1/4"
How wide your panel is.
Step-Over Height
3” - 7”
The distance from the bottom of the panel to the bottom of your flap.Flap Dimensions:
12"w x 23"h
The entry way your dog goes through.Overall Panel Width
16 5/16”
How wide your panel is. Step-Over Height
3” - 7”
The distance from the bottom of the panel to the bottom of your flap.| Flap Size | Flap Dimension | Step Over Range | Overall Panel Width | Recommended Pet Height |
|---|---|---|---|---|
| Small | 6" w x 11" h | 3" - 5" | 10-3/16" | 9" - 15" |
| Medium | 8" w x 15" h | 3" - 5" | 12-1/4" | 9" - 21" |
| Large | 10" w x 19" h | 3" - 7" (ships at 5") | 14-1/4" | 9" - 27" |
| Extra Large | 12" w x 23" h | 3" - 7" (ships at 5") | 16-5/16" | 9" - 34" |
Note: Endura Flap is not recommended for kittens or very small dogs.
Important Information about Custom Heights
| Custom Height Minimum & Maximum Heights | ||
|---|---|---|
| Model | Minimum | Maximum |
| Small | 35" | 100" |
| Medium | 42" | 107" |
| Large | 48" | 117" |
| Extra Large | 46" | 123" |
Custom orders are final sale once built. They are essential in two situations:
While most sliding glass door track heights are in the three standard height ranges offered, some are not. In those cases, we can build a Thermo Panel 3e in a custom height to fit your specific dimension.
The second situation is when you have a side-sliding window. A sliding window is essentially a miniature sliding glass door, and you can install a custom height panel, provided the window track is at least 1" wide.
Installation Instructions
Click to view the Two-Piece Dual Pane Thermo Panel 3e Instructions.
Printable Version
Sections
Parts
- Panel Pet Door
- Foam Weather Strip
- Center Post Weather Seal Draft Stopper
- Sliding Door C-Clamp Lock
- Screwdriver
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
One-Piece Panel
Step 1: Step Over Adjust the Step Over (Optional)
- The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder.
- If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.
Step 2 Adjust the Screws
- Lay the entire panel on a flat surface.
- Using a #2 flat head screwdriver, remove the bottom side-screws and loosen the upper side-screws. Screws were tightly installed to hold the panel together during shipping; a power tool* is recommended.
Step 3 Adjust the Spacers
- Once the bottom screws have been removed and the upper side-screws loosened, the Pet Door Assembly and spacers can be removed by sliding the sections down and out of the panel.
Step 4 Replace the Spacers
- Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height. You can move the spacer below and above the flap to raise or lower the flap height.
Step 5 Tighten the Screws
- When finished, replace the bottom side-screws and tighten the next upper-side screws.
Step 1: Install the Panel Spring Mechanism
- Loosen the height adjustment locks at the top of the pet panel with the screwdriver. This allows the spring mechanism to move freely up and down.
Step 2 Test Fit the Panel in Your Track
- To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold.
- Seat the panel on top of the small guide rail in the track.
Step 3 Apply the Weatherstripping
- Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
- Apply the foam weather-stripping by peeling back the paper and exposing the adhesive.
- Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.
Step 4 Install the Draft Stopper
- The center post weather seal strip (draft stopper) should be installed on the inside of the home.
- Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
- Repeat step two to install the panel in your track.
Click to view the One-Piece Dual Pane Thermo Panel 3e Instructions.
Difficulty
Easy
Steps
06
Time Required
0.5 hours
Sections
03
Flags
02
Parts
- Top Glass Panel Section
- Bottom Flap Section
- Foam Weather Strip
- Center Post Weather Seal Draft Stopper
- 4 Flathead Screws
- Flathead Screwdriver
- Screwdriver for Adjustment Locks
- Sliding Door C-Clamp Lock
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
Two-Piece Panel
Step 1: Step Over Adjust Step Over Height (Optional)
- The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder.
- If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.
Step 2 Rearrange the Pieces
- Simply slide the pieces up and out from the bottom half of your panel to rearrange.
- Loosen a bottom screw if the pieces are too snug to move.
Step 3 Reconnect the Pieces
- Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height.
- You can move the spacer below or above the flap to raise or lower the flap height.
Step 4 Screw the Pieces Together
- The order of the pieces is important! The piece on the bottom needs to always be at the bottom, as that is where the screws attach. You can now assemble the patio panel!
Step 1: Connect the Sections Align the Connectors
- Align the aluminum connectors extending from the bottom flap panel section with the top glass panel section.
- Press the aluminum connectors into the holes at the bottom of the top glass panel section.
- Ensure locking cover & height adjustment locks are on the same side!
Step 2 Tap the Pieces Together
- Gently tap the bottom surface of the panel against the ground to completely insert the connectors.
- Protect hard surfaces to prevent scratching.
- The components of the panel are designed to slide together very tightly.
Step 3 Secure the Sections
- Fasten the two panels together using the four flathead screws and countersunk washers found in the panel packaging.
- Use the included flathead screwdriver to tighten all four flathead screws and countersunk washers so the two halves of the door are pulled together.
Step 1: Install the Panel Adjust Spring Mechanism
- Loosen the height adjustment locks at the top of the pet panel. This allows the spring mechanism to move freely up and down.
Step 2 Test Fit the Panel in Your Track
- To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold.
- Seat the panel on top of the small guide rail in the track.
Step 3 Apply the Weatherstripping
- Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
- Apply the foam weather-stripping by peeling back the paper and exposing the adhesive.
- Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.
- Repeat step two to install the panel in your track.
Step 4 Install the Draft Stopper
- The center post weather seal strip (draft stopper) should be installed on the inside of the home.
- Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
Adjusting the Stepover Height
Variable Magnetic Resistance
Lock Details
Since you cannot lock your sliding door to your panel pet door, we have provided you with alternative locking methods to secure your home:
Installing the sliding door clamp: This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement. For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.
If you aren’t able to use the lock that comes with the panel: A great alternative to locking your sliding glass door is a Charley bar or dowel in the track. Both work off the same concept – they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
Other Installation Options
Semi-Permanent Installation:
You might choose to secure the panel in your track with screws. This can be done by drilling screws at an angle in the top and bottom tracks. We recommend doing this from the outside to minimize damage to the sliding glass door frame. One-way screws will prevent tampering or removal of the panel from the outside.
Stationary Panel:
Some stationary sliding door panels can be unfastened and moved over to one side so that you can install the pet door panel between the jamb and stationary panel.
Avoid damaging your sliding glass door by checking that your door can move and that you can reinstall it properly before trying to uninstall the unit.
You will still lose space in your slider to move through, however, you will be able to use your existing sliding door lock to secure your home. Installing your pet door this way is also great in that you already have an alarm system in place.
If your sliding glass door slides on the outside track, using an alternative lock might not be possible, so this allows you to still lock your door.
NOTE: You can do the stationary panel install with the regular spring actuator method – no need to screw it in.
FAQ
What if my panel is slightly too tall?
You can trim up to 3/4" off the spring-loaded adjustment piece at the top. This can be done by removing the adjustment piece with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low of you will not be able to put the top back on.
What if my panel is slightly too short?
We offer height extensions that will add 3/4" to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.
You can also make your extension out of 1" wood (which is 3/4" thick), such as a 1x3 if you need more than 3/4" in height.
Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.
What if hardware for the locking latch is preventing the door from sealing properly?
You might be able to remove the hardware, as in some cases they are only held in place with a couple of screws.
If you are not able to remove it you can try installing the panel on the stationary side as mentioned on page.
If neither of those choices works, you can try to shim the panel out so that it is even with the face of the lock. Depending on how far it sticks out you might be able to use a thicker foam weatherstripping or a small piece of wood between the panel and wall jamb.
My slider isn't closing evenly against the panel?
Your slider may not be level, which can happen in older houses. In that case, you may be able to adjust the wheels on the slider enough to line it back up. It will depend on your door, but you should be able to adjust a screw near the bottom of the door.
Turning the screw will adjust the wheels slightly. If the slider is level then it could be an issue with the metal height adjustment lock at the top of the panel. You can also use a rubber mallet to tap the curve into a straight line.
If the height adjustment lock is hitting the edge this can mean that the bottom of the panel is going further into the jamb that it can at the top. A gap appears that gets wider as you go down the panel. You can use wood shims or weatherstripping in the jamb to push out the bottom of the panel.
What if the panel is wobbling slightly back and forth?
If your track is wider than 1" you can use small wooden shims or extra weatherstripping to fill in the gap inside the top and bottom tracks. By placing the material inside the tracks you won't be able to see it, but it will stabilize the panel. You might also try semi-permanently installing the pet door.
The slider is on the outside track? How do I lock it?
This can cause an issue if you are trying to lock the door since the clamp lock, Charley bar, or dowel in the track won't really work. In this case, you can use a foot lock. The downside is that you have to drill that into the front end of the stationary panel frame as well as a small hole in the sliding door frame.
Depending on the handle of your slider, you might be able to put a Charley bar between the handle and the edge of the stationary. The slider would then push against the pet door and prevent someone from opening your door.
Alternatively, you can also try installing the pet door between your stationary glass and wall.
There is a large ste-down going out/coming in for the pet?
In this case, you can use a ramp or some small steps to minimize the height of the drop. You'll want the distance between the top of the flap and the ground to allow your pet to go through your flap without ducking or hitting their back.
What if I have an alarm system?
The alarm company might be able to come out and move the sensor for you. So instead of one part being on the door and the other on the jamb, you would end up having one side on the panel that matched up with the one on the sliding door.
As there are many different types of alarm configurations we would recommend that you always consult the alarm security company first to discuss your options.
Videos
The Thermo Panel 3e Patio Panel Pet Door
Adjusting the Stepover Height
Endura Thermo Panel 3e
Installing a Patio Pacific Panel Pet Door
How to Measure Your Door for a Sliding Glass Pet Door
Variable Magnetic Resistance
Adjusting the Stepover Height
The Leaf Blower Test
Endura Flap Dog Doors Durability
FAQ
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Does this dog door insert panel work with vinyl sliders? Yes, the Endura Flap Thermo Panel 3e will work for vinyl sliding glass door so long as the track is at least 1" thick. However, for a snug fit and aesthetic look in your vinyl slider track, we carry the Vinyl Sliding Glass Pet Door as well. Read about the differences between vinyl and aluminum pet door panels here. |
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Will a custom-made panel still have a spring-loaded design? Yes. The Thermo Panel 3e is built with a 3" spring-loaded height adjustment. When you order in one of the custom height ranges, you will be prompted for your track height. The patio panel will be built to a height that is approximately in the middle of this 3" range. For example, if you specify 40", your panel will be built to adjust from about 38" to 41" tall. We also have a sliding door pet door extension for cases where the panel may be slightly too short for their door tracks. |
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How long will my custom panel take to ship? Note that the glass units for custom height orders take one to two weeks for delivery from the tempering plant and that we need about a week to schedule the assembly after the glass unit arrives. So delivery will take 2-3 weeks depending upon your location. |
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How do I measure my door to get the correct height adjustment size? Measure from the innermost part of the bottom track to the innermost top part of the track. If there is a pencil railing, include that in the measurement because the panel straddles the railing. |
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Does the Endura Flap Pet Door Thermo Panel 3e require tools for installation? You'll need a flathead screwdriver to adjust the top piece. Panels that ship in two pieces (sectionals) will need to be assembled with 4 hex screws and a hex wrench, all of which are provided for sectionals. The following panels ship in one piece: Panels under 80 ¼" with a Small, Medium, or Large flap. The following panels ship in two pieces: Panels over 80 ¼" with a Small, Medium, Large, or Extra-Large flap and panels under 80 ¼" with an Extra-Large flap. Shipping a tall and/or wide panel in two pieces saves customers on shipping costs since it can be shipped in a smaller box. |
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Can an intruder remove the sliding glass dog door panel from the outside? No, the thumbscrews are on the inside of the sliding door pet door panel, so once installed, the Endura Flap Panel can't be removed without first loosening the thumbscrews from inside the home. |
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Is this sliding glass doggie door good in a cold winter climate? I want something effective in our winter months. Yes, the flap on all of our Endura Flap Pet Door for Sliding Glass Doors has been tested at -40°F and it withstands winds up to 50mph. The dual-pane glass is excellent for keeping your home insualted. |
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What Is the Step-Over? The step-over is the part of the sliding glass door dog door insert panel under the actual flap opening. Depending on the flap size purchased, the step-over can range from 3" to 7", so you can adjust it to any step-over within that range. |
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How thick is the sliding door dog door insert panel? The Endura Flap Sliding Glass Door Thermo Panel 3e is 1" thick. |
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What locking mechanism can I use for the Thermo Panel 3e? This Endura pet door comes with a C-clamp lock. Alternatively, a wooden dowel or Charley Bar can be used for additional security. |
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Will there be enough room for me to get through after the panel is installed? The sliding glass door doggie door panel will take up some space in your sliding door track. See the "Overall Panel Width" column in the size chart. This gives the width of the panel, which is the amount of space that will be taken up. |
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My sliding door track has a triangular guide rail. Will this pet door still work? Some sliding glass door tracks have a triangle-shaped guide rail instead of a cylindrical pencil rail running along the middle. This pet door panel has an arch along the bottom that is designed to sit on top of a cylindrical pencil rail. Pencil rails are shorter in height than triangular guide rails, which means that the pet door panel would wobble on top of it rather than sitting flush with the rest of the track. To accommodate the pet door panel you will need to build up the sides of the triangular guide rail so that the tip is less than ¼” tall. Please reach out to customer service if you have any questions about this process. |
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Will this panel work if my sliding glass door has a buried track? Some sliding glass doors have buried tracks. Since this panel has an arch along the bottom that is designed to sit on top of a pencil rail, it will not be secure in a slider with a buried track without modifications. We recommend securing the panel to the track wall with L brackets or toenailing it to the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss your options for a buried track. |
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I have a hurricane patio door. Will this pet door work for me? Hurricane door track styles vary widely, so they are case-by-case. Please reach out to customer service to discuss your pet door options for your sliding door. |
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Will this pet door work with Anderson and Pella sliding doors? Anderson and Pella sliding glass doors have an inner track wall but no outer track wall. Additionally, the pencil rail is on the outer edge of the track rather than in the middle. Since this pet door panel is designed to sit between two track walls and on top of a centered pencil rail, it cannot be installed in Anderson or Pella doors without modifications. We recommend building out your track and using L brackets or toenailing to secure the bottom of the panel to the inner track wall. Building out the track means adding a piece of wood or vinyl that is the same height as the pencil rail to the space next to the pencil rail. This creates a flat surface for the pet door panel to sit on. Next, you will need to secure the panel to the track wall. To do this, you can use L brackets or you can toenail the panel into the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss this process or different options for an Anderson or Pella sliding door. |
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Can I install this into a window? This panel would be too big for a window, but you can check out some of the pet doors made specifically for windows; such as the Thermo Panel 3e for Cats. |
Warranty
Endura Flap products have a lifetime warranty against defects in materials and workmanship under standard regular use. Endura Flap® Pet Doors Are 100% Designed, Engineered, and Manufactured in the USA. They are handmade for quality work in San Luis Obispo, California.
We will replace any defective parts at no cost to you. Defective parts may include incorrectly sized flaps, bent or dented frames, or improperly fitted parts.
Customers living outside of the continental United States are responsible for shipping costs as well as duties and taxes (if applicable) for any replacement parts or services covered under the warranty policy regardless of the replacement part or service's original cost.
Important Note:
Endura Flap® pet doors have a lifetime warranty for normal wear & tear and manufacturing defects (dog-chewing is not covered).
Damage caused by not using the product as intended, improper installation, and chewing is not covered under this warranty.Endura Flap Pet Doors used in a commercial application like a Kennel or Boarding facility have a three year warranty.
Customer Reviews
Customer Reviews
4.4 Based on 20 Reviews
Write a Review Ask a Question - Reviews
- Questions
Filter Reviews:
RM
04/10/2024
Rachel M.
United StatesSo far so good
I ordered a custom size. I got it a week earlier than estimated. It fit perfectly. I have no gaps in the sliding door even though my apartment building is 60 years old. The seal is good. I was able to install it and I am mechanically challenged. I had to remove all the magnets from the flap for my cat. She doesn't like using it but learned to use it within 1 week. Since then, she's gotten more comfortable using it (within 2 weeks). I'm super happy to give this option to my cat. She's happier being outside, and I'm really happy she can come in when I'm not home.
CO
03/25/2024
Christopher O.
United Statesmostly nice
The door itself is high quality, well made and arrived in good time. I do wish they would have asked me about the color as it said black/dark bronze and I don’t know if that was an option or they all just come black for both colors of sliding doors. For instance my doors are dark bronze but the door sent was black, so it mismatches a bit but it’s nothing terrible. The included weather stripping foam however was light grey so it looked terrible and I’m working to get a good replacement foam as the door doesn’t seal very well even with one strip on the door, I think two will be required and even then you have to shut the doors quite tightly to maintain a seal. This is a big issue here and it’s why I purchased Endura hoping it would keep the heat and cold out but I can see it will take some rigging. Also I’d recommend a foot lock or other easy to operate lock because you’ll need to get the seal tight and then lock the doors in place or you’ll have cracks and the little hand tightened clamp lock included is hard to deal with if you want a tight seal and use your door often.
SS
08/06/2023
Shea S.
United StatesAmazing!
Love this door. It's sturdy, easy to install and it's made my life a whole lot easier and the dogs love the freedom! Thank You
DS
01/19/2023
David S.
United StatesWell built and responsive customer service
They accidentally sent me the wrong sized door panel. When I let them know, they were quick to respond and cross shipped a replacement. Now that I have the panel installed, I am very satisfied. It seals the cold air out much better than the cheaper panel/flap that I had before. It is also a taller flap, so my taller dog doesn't have to hunch anymore!
VQ
12/31/2022
Venica Q.
United StatesImprovements needed
The door flap needs improvement. When the dog goes in or out, the flap swings back and forth, allowing a lot of cold air in, instead if stopping when it comes down. Not sure if this can be fixed. Outside of this the door is the perfect size, seals great and less stress on joints of larger dogs due to low step down.
- Small 6"w x 11"h
- Medium 8"w x 15"h
- Large 10"w x 19"h
- Extra Large 12"w x 23"h
Flap Dimensions:
6"w x 11"h
The entry way your dog goes through.Overall Panel Width
10 3/16"
How wide your panel is. Step-Over Height
3” - 5”
The distance from the bottom of the panel to the bottom of your flap.Flap Dimensions:
8"w x 15"h
The entry way your dog goes through.Overall Panel Width
12 1/4"
How wide your panel is. Step-Over Height
3” - 5”
The distance from the bottom of the panel to the bottom of your flap.Flap Dimensions:
10"w x 19"h
The entry way your dog goes through.Overall Panel Width
14 1/4"
How wide your panel is. Step-Over Height
3” - 7”
The distance from the bottom of the panel to the bottom of your flap.Flap Dimensions:
12"w x 23"h
The entry way your dog goes through.Overall Panel Width
16 5/16”
How wide your panel is. Step-Over Height
3” - 7”
The distance from the bottom of the panel to the bottom of your flap.| Flap Size | Flap Dimension | Step Over Range | Overall Panel Width | Recommended Pet Height |
|---|---|---|---|---|
| Small | 6" w x 11" h | 3" - 5" | 10-3/16" | 9" - 15" |
| Medium | 8" w x 15" h | 3" - 5" | 12-1/4" | 9" - 21" |
| Large | 10" w x 19" h | 3" - 7" (ships at 5") | 14-1/4" | 9" - 27" |
| Extra Large | 12" w x 23" h | 3" - 7" (ships at 5") | 16-5/16" | 9" - 34" |
Note: Endura Flap is not recommended for kittens or very small dogs.
Important Information about Custom Heights
| Custom Height Minimum & Maximum Heights | ||
|---|---|---|
| Model | Minimum | Maximum |
| Small | 35" | 100" |
| Medium | 42" | 107" |
| Large | 48" | 117" |
| Extra Large | 46" | 123" |
Custom orders are final sale once built. They are essential in two situations:
While most sliding glass door track heights are in the three standard height ranges offered, some are not. In those cases, we can build a Thermo Panel 3e in a custom height to fit your specific dimension.
The second situation is when you have a side-sliding window. A sliding window is essentially a miniature sliding glass door, and you can install a custom height panel, provided the window track is at least 1" wide.
Installation Instructions
Click to view the Two-Piece Dual Pane Thermo Panel 3e Instructions.
Parts
- Panel Pet Door
- Foam Weather Strip
- Center Post Weather Seal Draft Stopper
- Sliding Door C-Clamp Lock
- Screwdriver
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
One-Piece Panel
Step 1: Step Over Adjust the Step Over (Optional)
- The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder.
- If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.
Step 2 Adjust the Screws
- Lay the entire panel on a flat surface.
- Using a #2 flat head screwdriver, remove the bottom side-screws and loosen the upper side-screws. Screws were tightly installed to hold the panel together during shipping; a power tool* is recommended.
Step 3 Adjust the Spacers
- Once the bottom screws have been removed and the upper side-screws loosened, the Pet Door Assembly and spacers can be removed by sliding the sections down and out of the panel.
Step 4 Replace the Spacers
- Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height. You can move the spacer below and above the flap to raise or lower the flap height.
Step 5 Tighten the Screws
- When finished, replace the bottom side-screws and tighten the next upper-side screws.
Step 1: Install the Panel Spring Mechanism
- Loosen the height adjustment locks at the top of the pet panel with the screwdriver. This allows the spring mechanism to move freely up and down.
Step 2 Test Fit the Panel in Your Track
- To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold.
- Seat the panel on top of the small guide rail in the track.
Step 3 Apply the Weatherstripping
- Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
- Apply the foam weather-stripping by peeling back the paper and exposing the adhesive.
- Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.
Step 4 Install the Draft Stopper
- The center post weather seal strip (draft stopper) should be installed on the inside of the home.
- Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
- Repeat step two to install the panel in your track.
Click to view the One-Piece Dual Pane Thermo Panel 3e Instructions.
Difficulty
Easy
Steps
06
Time Required
0.5 hours
Sections
03
Flags
02
Parts
- Top Glass Panel Section
- Bottom Flap Section
- Foam Weather Strip
- Center Post Weather Seal Draft Stopper
- 4 Flathead Screws
- Flathead Screwdriver
- Screwdriver for Adjustment Locks
- Sliding Door C-Clamp Lock
Tools
- Flathead Screwdriver
Please read instructions & notes thoroughly before installation.
Two-Piece Panel
Step 1: Step Over Adjust Step Over Height (Optional)
- The top of the flap should be positioned to be at least 1” above the top of the pet’s shoulder.
- If the factory setting is not suitable, please adjust it before proceeding. If the current setting is suitable, proceed to the “Installation Instructions” section.
Step 2 Rearrange the Pieces
- Simply slide the pieces up and out from the bottom half of your panel to rearrange.
- Loosen a bottom screw if the pieces are too snug to move.
Step 3 Reconnect the Pieces
- Replace the spacers and the Pet Door Assembly by sliding them back in a different order to achieve the desired height.
- You can move the spacer below or above the flap to raise or lower the flap height.
Step 4 Screw the Pieces Together
- The order of the pieces is important! The piece on the bottom needs to always be at the bottom, as that is where the screws attach. You can now assemble the patio panel!
Step 1: Connect the Sections Align the Connectors
- Align the aluminum connectors extending from the bottom flap panel section with the top glass panel section.
- Press the aluminum connectors into the holes at the bottom of the top glass panel section.
- Ensure locking cover & height adjustment locks are on the same side!
Step 2 Tap the Pieces Together
- Gently tap the bottom surface of the panel against the ground to completely insert the connectors.
- Protect hard surfaces to prevent scratching.
- The components of the panel are designed to slide together very tightly.
Step 3 Secure the Sections
- Fasten the two panels together using the four flathead screws and countersunk washers found in the panel packaging.
- Use the included flathead screwdriver to tighten all four flathead screws and countersunk washers so the two halves of the door are pulled together.
Step 1: Install the Panel Adjust Spring Mechanism
- Loosen the height adjustment locks at the top of the pet panel. This allows the spring mechanism to move freely up and down.
Step 2 Test Fit the Panel in Your Track
- To insert the panel into the top track, push up against the spring mechanism and swing the bottom of the panel up and over the threshold.
- Seat the panel on top of the small guide rail in the track.
Step 3 Apply the Weatherstripping
- Once you’re sure the panel fits, remove it from the frame and lay it on its side on the ground.
- Apply the foam weather-stripping by peeling back the paper and exposing the adhesive.
- Unroll it along the edge of the panel, pressing to ensure it adheres. Install on both sides, trim it fit with scissors.
- Repeat step two to install the panel in your track.
Step 4 Install the Draft Stopper
- The center post weather seal strip (draft stopper) should be installed on the inside of the home.
- Trim with scissors as needed. Clean the edge of your patio door with rubbing alcohol before installing to assure a good seal.
Adjusting the Stepover Height
Variable Magnetic Resistance
Lock Details
Since you cannot lock your sliding door to your panel pet door, we have provided you with alternative locking methods to secure your home:
Installing the sliding door clamp: This clamp has a screw that tightens by hand to prevent the sliding door from moving beyond the clamp’s placement. For doors manufactured with the glass slider on the inside track, the lock can usually be installed on the door’s raised track.
If you aren’t able to use the lock that comes with the panel: A great alternative to locking your sliding glass door is a Charley bar or dowel in the track. Both work off the same concept – they block the slider from opening. When engaged you cannot pull the sliding door away from the pet door panel.
Other Installation Options
Semi-Permanent Installation:
You might choose to secure the panel in your track with screws. This can be done by drilling screws at an angle in the top and bottom tracks. We recommend doing this from the outside to minimize damage to the sliding glass door frame. One-way screws will prevent tampering or removal of the panel from the outside.
Stationary Panel:
Some stationary sliding door panels can be unfastened and moved over to one side so that you can install the pet door panel between the jamb and stationary panel.
Avoid damaging your sliding glass door by checking that your door can move and that you can reinstall it properly before trying to uninstall the unit.
You will still lose space in your slider to move through, however, you will be able to use your existing sliding door lock to secure your home. Installing your pet door this way is also great in that you already have an alarm system in place.
If your sliding glass door slides on the outside track, using an alternative lock might not be possible, so this allows you to still lock your door.
NOTE: You can do the stationary panel install with the regular spring actuator method – no need to screw it in.
FAQ
What if my panel is slightly too tall?
You can trim up to 3/4" off the spring-loaded adjustment piece at the top. This can be done by removing the adjustment piece with a #2 Phillips head screwdriver and cutting down the flanges. Be careful not to cut too low of you will not be able to put the top back on.
What if my panel is slightly too short?
We offer height extensions that will add 3/4" to the top of the panel that you slide into the channel at the top. These are made from the same aluminum as the panel so you can match the color.
You can also make your extension out of 1" wood (which is 3/4" thick), such as a 1x3 if you need more than 3/4" in height.
Cut it to the same width as the panel and slide it into the channel at the top. Paint the wood to match your frame color. If the extension makes the panel feel unstable, you can secure it with screws.
What if hardware for the locking latch is preventing the door from sealing properly?
You might be able to remove the hardware, as in some cases they are only held in place with a couple of screws.
If you are not able to remove it you can try installing the panel on the stationary side as mentioned on page.
If neither of those choices works, you can try to shim the panel out so that it is even with the face of the lock. Depending on how far it sticks out you might be able to use a thicker foam weatherstripping or a small piece of wood between the panel and wall jamb.
My slider isn't closing evenly against the panel?
Your slider may not be level, which can happen in older houses. In that case, you may be able to adjust the wheels on the slider enough to line it back up. It will depend on your door, but you should be able to adjust a screw near the bottom of the door.
Turning the screw will adjust the wheels slightly. If the slider is level then it could be an issue with the metal height adjustment lock at the top of the panel. You can also use a rubber mallet to tap the curve into a straight line.
If the height adjustment lock is hitting the edge this can mean that the bottom of the panel is going further into the jamb that it can at the top. A gap appears that gets wider as you go down the panel. You can use wood shims or weatherstripping in the jamb to push out the bottom of the panel.
What if the panel is wobbling slightly back and forth?
If your track is wider than 1" you can use small wooden shims or extra weatherstripping to fill in the gap inside the top and bottom tracks. By placing the material inside the tracks you won't be able to see it, but it will stabilize the panel. You might also try semi-permanently installing the pet door.
The slider is on the outside track? How do I lock it?
This can cause an issue if you are trying to lock the door since the clamp lock, Charley bar, or dowel in the track won't really work. In this case, you can use a foot lock. The downside is that you have to drill that into the front end of the stationary panel frame as well as a small hole in the sliding door frame.
Depending on the handle of your slider, you might be able to put a Charley bar between the handle and the edge of the stationary. The slider would then push against the pet door and prevent someone from opening your door.
Alternatively, you can also try installing the pet door between your stationary glass and wall.
There is a large ste-down going out/coming in for the pet?
In this case, you can use a ramp or some small steps to minimize the height of the drop. You'll want the distance between the top of the flap and the ground to allow your pet to go through your flap without ducking or hitting their back.
What if I have an alarm system?
The alarm company might be able to come out and move the sensor for you. So instead of one part being on the door and the other on the jamb, you would end up having one side on the panel that matched up with the one on the sliding door.
As there are many different types of alarm configurations we would recommend that you always consult the alarm security company first to discuss your options.
Videos
The Thermo Panel 3e Patio Panel Pet Door
Adjusting the Stepover Height
Endura Thermo Panel 3e
Installing a Patio Pacific Panel Pet Door
How to Measure Your Door for a Sliding Glass Pet Door
Variable Magnetic Resistance
Adjusting the Stepover Height
The Leaf Blower Test
Endura Flap Dog Doors Durability
FAQ
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Does this dog door insert panel work with vinyl sliders? Yes, the Endura Flap Thermo Panel 3e will work for vinyl sliding glass door so long as the track is at least 1" thick. However, for a snug fit and aesthetic look in your vinyl slider track, we carry the Vinyl Sliding Glass Pet Door as well. Read about the differences between vinyl and aluminum pet door panels here. |
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Will a custom-made panel still have a spring-loaded design? Yes. The Thermo Panel 3e is built with a 3" spring-loaded height adjustment. When you order in one of the custom height ranges, you will be prompted for your track height. The patio panel will be built to a height that is approximately in the middle of this 3" range. For example, if you specify 40", your panel will be built to adjust from about 38" to 41" tall. We also have a sliding door pet door extension for cases where the panel may be slightly too short for their door tracks. |
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How long will my custom panel take to ship? Note that the glass units for custom height orders take one to two weeks for delivery from the tempering plant and that we need about a week to schedule the assembly after the glass unit arrives. So delivery will take 2-3 weeks depending upon your location. |
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How do I measure my door to get the correct height adjustment size? Measure from the innermost part of the bottom track to the innermost top part of the track. If there is a pencil railing, include that in the measurement because the panel straddles the railing. |
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Does the Endura Flap Pet Door Thermo Panel 3e require tools for installation? You'll need a flathead screwdriver to adjust the top piece. Panels that ship in two pieces (sectionals) will need to be assembled with 4 hex screws and a hex wrench, all of which are provided for sectionals. The following panels ship in one piece: Panels under 80 ¼" with a Small, Medium, or Large flap. The following panels ship in two pieces: Panels over 80 ¼" with a Small, Medium, Large, or Extra-Large flap and panels under 80 ¼" with an Extra-Large flap. Shipping a tall and/or wide panel in two pieces saves customers on shipping costs since it can be shipped in a smaller box. |
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Can an intruder remove the sliding glass dog door panel from the outside? No, the thumbscrews are on the inside of the sliding door pet door panel, so once installed, the Endura Flap Panel can't be removed without first loosening the thumbscrews from inside the home. |
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Is this sliding glass doggie door good in a cold winter climate? I want something effective in our winter months. Yes, the flap on all of our Endura Flap Pet Door for Sliding Glass Doors has been tested at -40°F and it withstands winds up to 50mph. The dual-pane glass is excellent for keeping your home insualted. |
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What Is the Step-Over? The step-over is the part of the sliding glass door dog door insert panel under the actual flap opening. Depending on the flap size purchased, the step-over can range from 3" to 7", so you can adjust it to any step-over within that range. |
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How thick is the sliding door dog door insert panel? The Endura Flap Sliding Glass Door Thermo Panel 3e is 1" thick. |
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What locking mechanism can I use for the Thermo Panel 3e? This Endura pet door comes with a C-clamp lock. Alternatively, a wooden dowel or Charley Bar can be used for additional security. |
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Will there be enough room for me to get through after the panel is installed? The sliding glass door doggie door panel will take up some space in your sliding door track. See the "Overall Panel Width" column in the size chart. This gives the width of the panel, which is the amount of space that will be taken up. |
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My sliding door track has a triangular guide rail. Will this pet door still work? Some sliding glass door tracks have a triangle-shaped guide rail instead of a cylindrical pencil rail running along the middle. This pet door panel has an arch along the bottom that is designed to sit on top of a cylindrical pencil rail. Pencil rails are shorter in height than triangular guide rails, which means that the pet door panel would wobble on top of it rather than sitting flush with the rest of the track. To accommodate the pet door panel you will need to build up the sides of the triangular guide rail so that the tip is less than ¼” tall. Please reach out to customer service if you have any questions about this process. |
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Will this panel work if my sliding glass door has a buried track? Some sliding glass doors have buried tracks. Since this panel has an arch along the bottom that is designed to sit on top of a pencil rail, it will not be secure in a slider with a buried track without modifications. We recommend securing the panel to the track wall with L brackets or toenailing it to the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss your options for a buried track. |
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I have a hurricane patio door. Will this pet door work for me? Hurricane door track styles vary widely, so they are case-by-case. Please reach out to customer service to discuss your pet door options for your sliding door. |
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Will this pet door work with Anderson and Pella sliding doors? Anderson and Pella sliding glass doors have an inner track wall but no outer track wall. Additionally, the pencil rail is on the outer edge of the track rather than in the middle. Since this pet door panel is designed to sit between two track walls and on top of a centered pencil rail, it cannot be installed in Anderson or Pella doors without modifications. We recommend building out your track and using L brackets or toenailing to secure the bottom of the panel to the inner track wall. Building out the track means adding a piece of wood or vinyl that is the same height as the pencil rail to the space next to the pencil rail. This creates a flat surface for the pet door panel to sit on. Next, you will need to secure the panel to the track wall. To do this, you can use L brackets or you can toenail the panel into the track wall. Toenailing is the process of fastening the panel to the track by driving a nail at roughly a 45-degree angle into the panel and through the track wall. Please note that these modifications result in a semi-permanent installation. If you needed to remove the panel in the future you would first have to remove the L brackets or nails. Additionally, please note that this process would leave holes in the pet door panel and it would no longer be returnable. Please reach out to customer service to further discuss this process or different options for an Anderson or Pella sliding door. |
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Can I install this into a window? This panel would be too big for a window, but you can check out some of the pet doors made specifically for windows; such as the Thermo Panel 3e for Cats. |
Warranty
Endura Flap products have a lifetime warranty against defects in materials and workmanship under standard regular use. Endura Flap® Pet Doors Are 100% Designed, Engineered, and Manufactured in the USA. They are handmade for quality work in San Luis Obispo, California.
We will replace any defective parts at no cost to you. Defective parts may include incorrectly sized flaps, bent or dented frames, or improperly fitted parts.
Customers living outside of the continental United States are responsible for shipping costs as well as duties and taxes (if applicable) for any replacement parts or services covered under the warranty policy regardless of the replacement part or service's original cost.
Important Note:
Endura Flap® pet doors have a lifetime warranty for normal wear & tear and manufacturing defects (dog-chewing is not covered).
Damage caused by not using the product as intended, improper installation, and chewing is not covered under this warranty.Endura Flap Pet Doors used in a commercial application like a Kennel or Boarding facility have a three year warranty.
Customer Reviews
Customer Reviews
4.4 Based on 20 Reviews
Write a Review Ask a Question - Reviews
- Questions
Filter Reviews:
RM
04/10/2024
Rachel M.
United StatesSo far so good
I ordered a custom size. I got it a week earlier than estimated. It fit perfectly. I have no gaps in the sliding door even though my apartment building is 60 years old. The seal is good. I was able to install it and I am mechanically challenged. I had to remove all the magnets from the flap for my cat. She doesn't like using it but learned to use it within 1 week. Since then, she's gotten more comfortable using it (within 2 weeks). I'm super happy to give this option to my cat. She's happier being outside, and I'm really happy she can come in when I'm not home.
CO
03/25/2024
Christopher O.
United Statesmostly nice
The door itself is high quality, well made and arrived in good time. I do wish they would have asked me about the color as it said black/dark bronze and I don’t know if that was an option or they all just come black for both colors of sliding doors. For instance my doors are dark bronze but the door sent was black, so it mismatches a bit but it’s nothing terrible. The included weather stripping foam however was light grey so it looked terrible and I’m working to get a good replacement foam as the door doesn’t seal very well even with one strip on the door, I think two will be required and even then you have to shut the doors quite tightly to maintain a seal. This is a big issue here and it’s why I purchased Endura hoping it would keep the heat and cold out but I can see it will take some rigging. Also I’d recommend a foot lock or other easy to operate lock because you’ll need to get the seal tight and then lock the doors in place or you’ll have cracks and the little hand tightened clamp lock included is hard to deal with if you want a tight seal and use your door often.
SS
08/06/2023
Shea S.
United StatesAmazing!
Love this door. It's sturdy, easy to install and it's made my life a whole lot easier and the dogs love the freedom! Thank You
DS
01/19/2023
David S.
United StatesWell built and responsive customer service
They accidentally sent me the wrong sized door panel. When I let them know, they were quick to respond and cross shipped a replacement. Now that I have the panel installed, I am very satisfied. It seals the cold air out much better than the cheaper panel/flap that I had before. It is also a taller flap, so my taller dog doesn't have to hunch anymore!
VQ
12/31/2022
Venica Q.
United StatesImprovements needed
The door flap needs improvement. When the dog goes in or out, the flap swings back and forth, allowing a lot of cold air in, instead if stopping when it comes down. Not sure if this can be fixed. Outside of this the door is the perfect size, seals great and less stress on joints of larger dogs due to low step down.
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