Every variety of the Endura Flap pet door uses this flap retainer clip to hold the magnets on the bottom of the flap.
This includes door, wall and kennel Endura dog doors as well as Thermo Sash 3e window cat doors and Thermo Panel 3e and Quick Panel sliding glass doggy doors. Since the flap is soft, it is possible to squeeze the flap and release the tabs that hold this in place, and it can then be pulled off. This commonly happens if a dog plays tug of war with the dog door flap.
Comes complete with the magnets installed. If you purchase an Endura replacement flap it will include a flap retainer clip.