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The Endura Flap vinyl dog door sliding glass has a 90 day return policy.
Vinyl sliding glass door with dog door built in has a flexible vinyl flap material that avoids cracking.
This pet door for sliding door in Extra Large can accommodate doggys as large as a Great Dane.
The Endura Flap sliding door with dog door includes a 15 year warranty.
Share between pets of different sizes easily with high aspect ratio, allowing for low step-over heights even for the larger sizes.
Vinyl sliding glass doggie door - the Endura Flap has adjustable magnet strength to allow easy training for you and your pet.
This vinyl sliding glass door with dog door utilizes temporary installation and is great for renters.
This sliding door doggie door in Size Large can accommodate pets as big as as Labrador Retriever.
Vinyl sliding door doggie door in Size Large. Locking cover secures your home and restricts pet access when needed.
Vinyl dog door sliding door in Size Large. The Endura Flap has a high aspect ratio for ease of use for your doggy or kitty.
The Endura Flap vinyl dog door sliding door is made with dual pane, low e glass for better insulation and UV protection.
Vinyl sliding glass dog door insert size medium.
The Endura Flap vinyl doggy door for sliding door withstands winds up to 50 miles per hour. Great summer and winter dog door.
Vinyl insulated dog door for sliding glass door comes in various sizes.
Endura extreme weather pet door with locking cover included.
Vinyl dog door for sliding glass door Size Small. Cold weather dog doors to fit your kitty or small dog's needs.
Endura door Size Small. The Endura Flap is the best dog door for cold weather engineered to withstand -40 degree severe weather.
Endura panel Flap spring loaded sliding glass door dog door.
Weather proof doggie door size small. Locking cover included with purchase.
Vinyl pet door for sliding glass door - extreme weather dog door

Endura Flap Severe Weather Vinyl Sliding Glass Dog Door

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  • Double flap vinyl panel designed specifically for vinyl sliding glass doors in severe weather climates.
  • Durable, designed to resist harsh weather
  • Dual-pane, Low-E glass reduces UV rays and infrared light
  • Comes in sizes Small, Medium, Large, and Extra Large dog doors for sliding glass doors
  • Tool-free installation
  • Free shipping
Flap Size Flap Dimension Step
Stock No
Small #6 6" w x 10" h 4" 12 3/16"
Medium #8 8" w x 14" h 4" 14 3/16"
Large #10 10" w x 18" h 4" 16 3/16"
Extra Large #12 12" w x 22" h 4" 18 3/16"


Height Options

  • P: 74 ¾" - 77 ¾"
  • Q: 77 ¼" - 80 ¼"

 If your measured track height is near the bottom of the adjustment range then you should review A Note of Caution

Don't think that the 12" width isn't enough unless you actually measure.  12" is Huge!  

Wondering how to measure your track? Review our Track Measuring Guide.



1 Piece Panel Pet Door

1-panel pet door

locking cover

1 sliding door clamp lock

1 center post weather seal draft stopper

1 foam weatherstrip

1 installation instruction booklet


The Endura Flap Vinyl Panel is the most insulating dog door on the market, designed specifically for vinyl-framed sliding glass doors of any size. Unlike other metal frames common among sliding glass door panels, the vinyl frame fits more comfortably in the track and matches the original vinyl of your sliding glass door. This semi-permanent pet door has a spring-loaded design, which means that no tools are necessary for installation. It safely secures the panel in place without making any permanent alterations, which is ideal for rentals and vacation homes! Engineered to withstand -40 degree weather and 50 mph winds, the magnets that line the flap ensure the utmost energy efficiency and keep the flap sealed during rough weather. The vinyl panel also features dual-pane, Low-E glass, which blocks harsh light without compromising the amount of natural lights coming in.



  • Pet flaps range from small“extra large
  • Fits into existing 1 ½ - 1 ¾ thick track of your vinyl door, occupying space in the door opening
  • Vinyl Panel comes in three adjustable track height ranges:
    • 74 ¾ - 77 ¾
    • 77 ¼ - 80 ¼
  • Quality of flap ensures that it stays flexible in extreme temperatures
  • Magnets withstand drafts, leaks, and heavy wind
  • Flexible flap swings on a rod at the top to avoid cracking and flexing
  • Includes a secure locking cover
  • 90-day return policy and a 15-year warranty



  • Vinyl frame applies seamlessly into the track for a highly insulating fit
  • The panel can be removed at any time with the semi-permanent, spring-load design
  • Steer clear from cutting holes or making any permanent changes to your door
  • Comes in white to match the interior design of an existing sliding glass door
  • Sturdy locking cover allows you to secure the door when necessary
  • Gives dogs the freedom to access the outdoors without needing you to let them out
  • Structurally sound design is built to last


Need help installing? Check out our Vinyl Sliding Glass Door Installation page.


Installation Video

Endura Flap® Pet Door Warranty

To the original purchaser, Endura Flap® Pet Doors warrants this product and all of its component parts to be free of defects in materials or workmanship for a period of 15 years from the date of delivery to the customer.

Damage caused by accident, improper installation, abuse or normal wear, including damage by pets or glass breakage is specifically excluded from this warranty. Defective materials returned to Endura Flap® Pet Doors together with proof of purchase, will be repaired or replaced and returned to the customer free of charge.

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