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Endura Flap Thermo Panel 3e

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  • Insulated dog door for sliding glass doors with dual pane, Low-E glass and sturdy aluminum framing
  • Safe and energy-efficient flap for pets
  • No tools required for installation, perfect for renters or vacation homes
  • Adjustable heights and custom sizes to fit all sliding glass door models | track width minimum of 1"
  • Strong and durable Locking Cover included to secure your home and pet
  • Note: For all custom heights you will be contacted for your exact sliding glass door track measurements
Superior Weather Resistance Superior Weather Resistance
Great for Renters Great for Renters
Easy, Tool-Free Installation Easy, Tool-Free Installation

Size Chart

Flap Size Flap Dimension Step Over Range Overall Panel Width Recommended Pet Height
Small 6" w x 11" h 3" - 5" 11 1/4" 9" - 15"
Medium 8" w x 15" h 3" - 5" 13 1/4" 9" - 19"
Large 10" w x 19" h 3" - 5" 15 1/4" 9" - 23"
Extra Large 12" w x 23" h 3" - 7" 17 1/4" 9" - 29"

Note: Endura Flap is not recommended for kittens or tiny dogs.

Parts List

1 Piece Pet Door 2 Piece Pet Door
1x Panel Pet Door 1x Top Glass Panel Section
1x Sliding Door Clamp 1x Bottom Flap Section
1x Foam Weather Strip 4x Hex screws
1x Center Post Weather Seal Draft Stopper 1x Hex wrench
1x Sliding Door Clamp
1x Foam Weather Strip
1x Center Post Weather Seal Draft Stopper

Popular Features

  • Superior insulation from the dual-paned glass and an energy-efficient flap that has magnets on all sides to shield against the cold or heat
  • Excellent sealing from bellows on the side that expand and contract in response to the weather
  • Easy installation with the spring-loaded top
  • Longer-lasting flap rotates on a rod rather than screwed into the frame to avoid extreme wear and tear
  • PVC Flap (rather than Vinyl) will not warp or yellow in direct heat
  • Fits into most sliding glass doors including aluminum and vinyl frames with a track width minimum of 1"
  • Secure locking cover can be placed over the pet door to ensure that intruders will not be able to come in through the dog door
  • Locks provided to secure your sliding glass pet door to your frame
  • Adjustable step over height allows you to tailor the panel to your pet's size so that they may comfortably use the pet door 
  • Option to add or decrease magnet strength for training or to increase already significant wind resistance

Replacement Parts and Accessories

The Thermo Panel 3e Patio Panel Pet Door


Installing a Patio Pacific Panel Pet Door 


Variable Magnetic Resistance 


Adjusting the Stepover Height 


The Leaf Blower Test 


Endura Flap Dog Doors Durability 

Endura Flap® Pet Door Warranty

Endura Flap products have a lifetime warranty against defects in materials and workmanship under standard regular use. Damage caused by not using the product as intended, improper installation and chewing is not covered under this warranty.

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