Perfect Pet Deluxe Pet Door Medium - flap 7" x 11 1/4"

Features include:
* Inner telescoping frame that adapts to doors 1/2" - 1 3/4" thickness.
* High quality aluminum construction.
* Clear flap allows pet to see if slide is in place.
* Tamper proof mounting system door can"t be removed from the outside.
* Thermo-insulated lockout slide on small- medium and extra large. Metal lockout slide on super large.

Limited lifetime warranty.

This product carries a shipping weight of 4 lbs.