• Insulated, energy-efficient pet door for sliding glass doors with custom sizing
  • Durable aluminum frame offers superior climate control
  • Fits sliding glass door tracks 1" thick and can be adjusted to accommodate varying heights
  • Pet flaps available in sizes from small to extra-large, allowing pets of all sizes access
  • Built-in magnetic closure enhances storm and wind resistance, while ensuring the flap remains securely shut
  • Made with 3/16" clear safety glass which is 59% thicker than the standard for enhanced durability and increased energy efficiency. Prefer dual pane glass? Explore our Dual Pane Thermo Panel?

Endura Flap Custom Thermo Panel 3e

253 Reviews
Made in the USA USA flag icon
Regular price $709.99

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Color: White
Flap Size
Height Adjustment Range


  • Insulated, energy-efficient pet door for sliding glass doors with custom sizing
  • Durable aluminum frame offers superior climate control
  • Fits sliding glass door tracks 1" thick and can be adjusted to accommodate varying heights
  • Pet flaps available in sizes from small to extra-large, allowing pets of all sizes access
  • Built-in magnetic closure enhances storm and wind resistance, while ensuring the flap remains securely shut
  • Made with 3/16" clear safety glass which is 59% thicker than the standard for enhanced durability and increased energy efficiency. Prefer dual pane glass? Explore our Dual Pane Thermo Panel?

Questions

Can an intruder remove a dog door for sliding glass doors from the outside?

No, the thumbscrews are on the inside of the panel, so once installed, the Endura Flap Panel cannot be lifted out and removed without first loosening the thumbscrews from inside the home.

Can I install it myself?

It is meant to easily be put in and removed. You just have to loosen the screws at the top, fit it into the track, and then tighten them. Then to remove it you simply loosen them again and pop it out.

Can you lock the pet door?

It comes with a closing cover, and you slide that in on the inside of the house. It is a very secure ABS plastic material that is as strong as a 16 gauge steel.

Explore all questions
Product Details

Product Details


Grant your pets the freedom they crave with the Custom Endura Flap Thermo Panel 3e, an innovative and energy-efficient pet door solution for your sliding glass door. With a durable aluminum frame, this pet door is designed to withstand extreme climates while providing superior insulation and energy efficiency.

Installation is a breeze, thanks to its spring-loaded design that fits securely into your sliding glass door track without permanent alterations. The Thermo Panel 3e is adjustable to accommodate varying door heights, and custom sizing is available to ensure the perfect fit for your home.

The pet flaps, available in sizes ranging from small to extra-large, cater to pets of all sizes. The environmentally-friendly polyolefin polymer flap remains flexible in temperatures as low as -40 degrees Fahrenheit, ensuring smooth operation even in harsh weather conditions. A magnetic closure on three sides of the flap enhances storm and wind resistance while keeping the flap securely shut when not in use.

For added security, the Thermo Panel 3e includes a C-Clamp Lock and a locking cover that allows you to block access when needed. The pet door's structurally sound design is built to last, sparing you the expense of frequent flap replacements.

With the Custom Endura Flap Thermo Panel 3e, you'll experience the benefits of increased temperature stability inside your home, and fewer insects making their way in. Invest in a pet door that combines convenience, energy efficiency, and durability with the Custom Endura Flap Thermo Panel 3e.

Don't see your track height? Check out the Endura Flap Thermo Panel 3e. For a dual-pane option, see the Custom Dual-Pane Panel or the Standard Size Dual-Pane Panel

Features:

  • Easy-to-install spring-loaded design that fits into your existing sliding glass door track
  • Constructed with environmentally-friendly polyolefin polymer flap, flexible in temperatures as low as -40°F
  • Magnetic closure on three sides of the flap ensures excellent wind resistance and secure sealing
  • C-Clamp Lock included for to lock the slider into the door frame or a Charley Bar can be purchased separately
  • Designed and engineered in the USA


Benefits:

  • Easy installation with spring-loaded design allows you to remove the panel easily if need be
  • Included locking cover allows you to block access when needed
  • Structurally sound design is built to last so you don't have to spend a fortune on replacement flaps
Size icon Sizing & Fit

Size Chart

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.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 4 1/2"

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.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 4 1/2"

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.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 6"

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 3/8"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 6"

The distance from the bottom of the panel to the bottom of your flap.

Flap Dimensions:

14"w x 27"h

The entry way your dog goes through.

Overall Panel Width

18-3/8"

How wide your panel is.

Flap dimensions
Panel width
Step over height

Step-Over Height

3" - 7.5"

The distance from the bottom of the panel to the bottom of your flap.

Flap Size Flap Dimension Step Over Range Outside Frame Dimension Recommended Pet Height
Small 6"w x 11"h 3" - 4-1/2" (ships at 3") 10 3/16" 9" - 15"
Medium 8"w x 15"h 3" - 4-1/2" (ships at 3") 12 1/4" 9" - 21"
Large 10"w x 19"h 3" - 6" (ships at 4-1/2") 14 1/4" 9" - 27"
Extra Large 12"w x 23"h 3" - 6" (ships at 4-1/2") 16 3/8" 9" - 34"
XX Large 14"w x 27"h 3" - 7.5" (ships at 6") 18-3/8" 9" - 41"

Do not know which size to get? Here is a measurement guide to help you out.

Track Height Adjustment range is based on the measurement of your sliding door track height from the lowest point of your track to the highest point. Each Endura Flap Thermo Panel 3e has a 3" adjustment range. Review our Track Measuring Guide video for additional, detailed information The following standard adjustment ranges are available:

  • Short: 74 3/4" – 77 3/4"
  • Regular: 77 1/4" – 80 1/4"
  • Tall: 93 1/4" – 96 1/4" (additional cost)

If your measured track height does not fall within one of the ranges above, we can make a custom height! Custom height option may take up to 4 weeks to special order the glass and build the panel.

FAQs

FAQ

Reviews

Customer Reviews

Request Freight Quote

Track heights exceeding 106 inches (107" or higher) may require additional shipping charges. Please provide your contact information for a custom freight quote, and our team will follow up during normal business hours.