Find The Best Pet Door Size For My Pet

Where To Install:

Door

Wall

Window

Sliding Glass Door

Measure the height of your pet from the tallest point of your pet's back to the ground: inches

Measure the width of your pet from the widest part from shoulders to shoulder: inches

My pet has limited mobility. A pet who has trouble walking needs a taller pet door so that it will be easier for them to climb through.

Window

9-15

6

Small

https://enduraflap.com/products/horizontal-window-cat-door?variant=39518503370831
Door

8-14

6

Small

https://enduraflap.com/products/double-flap-door?variant=43778127364326
Door

8-21

8

Medium

https://enduraflap.com/products/double-flap-door?variant=43778127560934
Door

8-27

10

Large

https://enduraflap.com/products/double-flap-door?variant=43778127757542
Door

8-34

12

Extra Large

https://enduraflap.com/products/double-flap-door?variant=43778127954150
Wall

8-14

6

Small

https://enduraflap.com/products/double-flap-wall?variant=30371900096591
Wall

8-21

8

Medium

https://enduraflap.com/products/double-flap-wall?variant=30371900194895
Wall

8-27

10

Large

https://enduraflap.com/products/double-flap-wall?variant=30371900293199
Wall

8-34

12

Extra Large

https://enduraflap.com/products/double-flap-wall?variant=30371900391503
Door

8-16

6

Small

https://enduraflap.com/products/kennel?variant=31373400473679
Door

8-22

8

Medium

https://enduraflap.com/products/kennel?variant=31373400506447
Door

8-28

10

Large

https://enduraflap.com/products/kennel?variant=31373400539215
Door

8-36

12

Extra Large

https://enduraflap.com/products/kennel?variant=31373400571983
Sliding Glass Door

8-14

6

Small

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506156111
Sliding Glass Door

8-21

8

Medium

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506221647
Sliding Glass Door

8-31

10

Large

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506287183
Sliding Glass Door

8-36

12

Extra Large

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506352719
Door

9-16

6

Small

https://enduraflap.com/products/single-flap-door?variant=43778122416358
Door

9-22

8

Medium

https://enduraflap.com/products/single-flap-door?variant=43778122612966
Door

9-28

10

Large

https://enduraflap.com/products/single-flap-door?variant=43778122809574
Door

9-36

12

Extra Large

https://enduraflap.com/products/single-flap-door?variant=43778123006182
Wall

9-16

6

Small

https://enduraflap.com/products/single-flap-wall?variant=30337359282255
Wall

9-22

8

Medium

https://enduraflap.com/products/single-flap-wall?variant=30345914679375
Wall

9-28

10

Large

https://enduraflap.com/products/single-flap-wall?variant=30345914777679
Wall

9-36

12

Extra Large

https://enduraflap.com/products/single-flap-wall?variant=30345914875983
Sliding Glass Door

9-15

6

Small

https://enduraflap.com/products/thermo-panel-3e?variant=39518500913231
Sliding Glass Door

9-21

8

Medium

https://enduraflap.com/products/thermo-panel-3e?variant=39518501109839
Sliding Glass Door

9-27

10

Large

https://enduraflap.com/products/thermo-panel-3e?variant=39518501306447
Sliding Glass Door

9-34

12

Extra Large

https://enduraflap.com/products/thermo-panel-3e?variant=39518501503055
Sliding Glass Door

9-15

6

Small

https://enduraflap.com/products/vinyl-cat-door?variant=39518506418255
Sliding Glass Door

9-14

6

Small

https://enduraflap.com/products/vinyl-slider?variant=39518506516559
Sliding Glass Door

9-21

8

Medium

https://enduraflap.com/products/vinyl-slider?variant=39518506582095
Sliding Glass Door

9-32

10

Large

https://enduraflap.com/products/vinyl-slider?variant=39518506647631
Sliding Glass Door

9-38

12

Extra Large

https://enduraflap.com/products/vinyl-slider?variant=39518506713167
Window

9-15

6

Small

https://enduraflap.com/products/thermo-sash-3e-cat?variant=39518499536975
Window

9-15

6

Small

https://enduraflap.com/products/thermo-sash-3e?variant=39518503993423
Window

9-21

8

Medium

https://enduraflap.com/products/thermo-sash-3e?variant=39518504026191
Window

9-27

10

Large

https://enduraflap.com/products/thermo-sash-3e?variant=39518504058959
Window

9-34

12

Extra Large

https://enduraflap.com/products/thermo-sash-3e?variant=43883098013926
Sliding Glass Door

8-14

6

Small

https://enduraflap.com/products/severe-weather-vinyl?variant=43568595861734
Sliding Glass Door

8-21

8

Medium

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506254415
Sliding Glass Door

8-27

10

Large

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506319951
Sliding Glass Door

8-34

12

Extra Large

https://enduraflap.com/products/severe-weather-vinyl?variant=39518506385487
Door

9-16

6

Small

https://enduraflap.com/products/single-flap-thin-door?variant=43799113990374
Door

9-22

8

Medium

https://enduraflap.com/products/single-flap-thin-door?variant=43799114023142
Door

9-28

10

Large

https://enduraflap.com/products/single-flap-thin-door?variant=43799114055910
Door

9-36

12

Extra Large

https://enduraflap.com/products/single-flap-thin-door?variant=43799114088678
Wall

8-14

6

Small

https://enduraflap.com/products/endura-flap-builder-series-pet-door-for-walls?variant=43755941036262
Wall

8-21

8

Medium

https://enduraflap.com/products/endura-flap-builder-series-pet-door-for-walls?variant=43755941101798
Wall

8-27

10

Large

https://enduraflap.com/products/endura-flap-builder-series-pet-door-for-walls?variant=43755941167334
Wall

8-34

12

Extra Large

https://enduraflap.com/products/endura-flap-builder-series-pet-door-for-walls?variant=43755941232870
Wall

8-14

6

Small

https://enduraflap.com/products/endura-flap-builder-pro-series-for-walls?variant=43755940774118
Wall

8-21

8

Medium

https://enduraflap.com/products/endura-flap-builder-pro-series-for-walls?variant=43755940839654
Wall

8-27

10

Large

https://enduraflap.com/products/endura-flap-builder-pro-series-for-walls?variant=43755940905190
Wall

8-34

12

Extra Large

https://enduraflap.com/products/endura-flap-builder-pro-series-for-walls?variant=43755940970726

Regular price: $299.99
Sale price: $299.99
Unit price: per

Watchdog Steel Security Pet Door Cover

Name: Watchdog Steel Security Pet Door Cover
Brand: Endura Flap
SKU: 11WS-A30LL-0L
Price: 299.99 USD
Availability: InStock
Rating: 5 (10 reviews)

Regular price: $299.99
Sale price: $299.99
Unit price: per

Flap Size

Info

Extra Extra Large

Special Product Option

Door Mount

Wall Mount

Opening Direction

Opens Left (Hinges on L)

Opens Right (Hinges on R)

Quantity must be 1 or more

Your Sliding Glass Door's Track Height Please enter numbers only. No letters or special characters allowed. For panels 106" and over, please reach out to our customer support team for assistance at customerservice@enduraflap.com, or 800-826-2871. This field is required.

12-gauge steel security cover for pet doors with 1,000 possible combination lock codes
Available in 3 sizes to fit various pet door brands and models
Designed for installation on doors and walls only
Customizable opening direction (left or right) and installation type (wall or door)
Durable, powder-coated white finish

Watchdog Steel Security Pet Door Cover

Large / Door Mount / Opens Left (Hinges on L) Edit

Product Details

Enhance home security: Watchdog Steel Security Pet Door Cover provides peace of mind by preventing unauthorized access through pet doors
Robust construction: 12-gauge steel ensures maximum protection against intruders
Versatile fit: Choose from 3 sizes to match a wide range of pet door brands and models
Installation options: Designed for mounting on doors and walls, with customizable opening direction (left or right) and installation type (wall or door)
Secure locking mechanism: Combination lock with 1,000 possible codes allows you to set and reset your own security code
Easy removal when unlocked: Door detaches from hinges for unrestricted pet access when not in use
Aesthetic appeal: Powder-coated white finish can be easily painted over to match your home's exterior
Satisfied customers: Many people have praised the Watchdog Steel Security Pet Door Cover for its durability, ease of use, and peace of mind it offers while they are away or during nighttime hours

Size Chart

Endura Flap Size	Watchdog Security Cover Size	Watchdog Interior Flap Dimensions	Watchdog Exterior Frame Dimensions	Watchdog Depth
Medium Endura Flap	Large "Flap" Size	11" X 17-1/2"	15-1/2" X 21-1/2"	5/8"
Large Endura Flap	X-Large "Flap" Size	12" X 24"	16-1/2" X 28"	5/8"
Extra Large Endura Flap	XX-Large "Flap" Size	16" X 26"	20-1/2" X 30"	5/8"

Please see in the table above the corresponding Watchdog Security Cover sizes for Endura flap sizes Medium through Extra Large. The Watchdog Security Cover is not compatible with the Small Endura Flap size.

FAQ

Are there really no other color options available?

Unfortunately, this item only comes in white. However, the polished finish makes it easy to paint over in order to fit your home's aesthetic.

Can I automatically lock this at a certain time?

No, this cover locks manually. When you go out of town or need to lock it in the night, you would need to go outside and do so.

Can I reset the combination lock any time?

Yes! You will need your existing code in order to set a new code. There is no other way to unlock your steel cover if you forget the code. Keep it written down, in a safe place.

Can I use the watchdog dog door just a pet door?

We recommend using this steel home security door cover in addition to a pet door, for its intended purpose. If you were to use this as a pet door, the door would have to be open all the time to allow your pet access. Thereby permitting the outside air, critters, or burglars to enter your home.

Can this be used on patio pet doors to make it a more secure dog door?

No, these are specifically meant to be used on doors or walls.

For the opening direction, is that when I am looking at the door from the inside or outside?

When you select your optimal opening direction, this is referring to where the hinges are when you are outside looking at the pet door installation. 'Left' means the hinges are on your left when you are outside.

How big is this frame going to be?

This cover will go over your existing pet door frame. It will be bolted to your wall/door. The cover's frame will depend on how large your dog door is, so be sure you have extra room on all sides of the frame.

How does the secure doggie door work with the pet door?

It fits over the frame of the pet door and is securely screwed in the door or wall. You need to choose a Watchdog that is larger than the outside frame dimension of your pet door.

I have an uneven surface, will this work?

You may have to do some caulking or recessing in order to get the screws installed securely in order for this to work properly. We would suggest contacting a contractor to do this.

I need a doggy door cover for a secure door, do you have one?

Yes, the Watchdog Steel Security Pet Door Cover is the most secure way to lock your pet door.

Page 1 of 3

Warranty

WatchDog Warranty:

This warranty covers any failure of the equipment due to defective material or workmanship. This warranty is provided by the equipment manufacturer and is void if the equipment has been used for purposes other than its intended purpose, abused, or damaged due to improper handling or installation.

Customer Reviews

5.0 Based on 11 Reviews

5 ★

100%

4 ★

3 ★

2 ★

1 ★

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Reviews
Questions

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Your input is very much appreciated. Share it with your friends so they can enjoy it too!

01/05/2025

Barbara

United States

Great Security Feature

Easily installed by an 80-year-old woman with an 20volt drill, lock washers and a socket wrench. I bolted it to an inside wall because it's easier and more convenient for me to open/close the door at night or during inclement weather. Secure, safe and well worth the investment.

Watchdog Steel Security Pet Door Cover

09/30/2018

Jeanne

At Least Robbers Will Have a Challenge!

I'm convinced that if your home is a target of robbers, they'll find a way to get in, regardless of our best efforts to stop them. However, I've now bought two of these pet door security doors. One is on the "inside" of the pet door in my closet so that I do not have to go outside to lock it...I'm very confused as to why they instruct us to place the lock on the outside to begin with...maybe I'm missing something... The second one is on an interior door from my closet to the bedroom, so that I don't have to leave the closet door open, and so that if someone does manage to get through the first security door, they will have more problems getting through the second security door. Perhaps I'm overdoing it, but I love these doors! And they are easy to install and use.

Watchdog Steel Security Pet Door Cover

02/14/2018

Brandy

Excellent Security Door

This is an exceptionally well made security door. it is made of steel and the slide bolt is very secure. The only issue I had was in the shipping that seemed to get stuck with FEDEX no fault of the vendor.

Watchdog Steel Security Pet Door Cover

12/05/2017

Frederick

worth the investment

Just looking at it you know this is a quality security cover. Way stronger than the standard pet door and really easy to use.

Watchdog Steel Security Pet Door Cover

12/02/2017

Larry

Exactly what we were looking for

This combination lock cover definitely gives us peace of mind when we are gone on vacation. We have a very large dog (who is probably as threatening as a baby bunny), so it's great that we can lock it at night to keep intruders out.

Watchdog Steel Security Pet Door Cover