Endura Flaps fit Thermo Panel 3e, Quick Panel 3, Thermo Sash 3e, Pet Door Guys window units, and Endura door and wall pet doors.
We don't ever expect to sell a replacement Endura flap for a door because it has worn out through regular use. Nevertheless, we do have them for sale and if your dog has chewed up your flap or otherwise damaged it the flap can be replaced.The Endura flaps should be easy to identify. As can be seen in the photo, the Endura flap is hung on a steel hinge pin which goes all the way across the top of the flap. It is hollow and therefore insulated, and it has 3 hollow boxes built into the flap.
This dog door flap is a top performer. While the flap is hollow and insulated, it is also made from a soft plastic. The magnet strips on the sides of the flap adjusts the width via the bellows, so this door automatically compensates for flap shrinkage in cold weather or expansion in hot weather. Endura Flaps also have magnets across the bottom which attract a floating magnet bar in the frame. The bar jumps up to hit the bottom of the flap. Testing to failure during product development took an amazing 3,000,000+ cycles. This door was also put in a wind tunnel, where a medium size double flap door withstood a 50 mph wind without blowing open. The Endura Flap dog door is very weather tight and energy efficient.
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I have had this door for years. Needed customer service help on replacing the flaps. I called several times. They were very patience and explain what I needed to do very well. Great product.