DESIGNED FOR MEDIUM SIZE PETS :Pet Dog Door Replacement Flap Measures 8 1/8" W x 12 7/8" H .door flap have 4 holes on the top of the flap for adjustment,perfectly compatible with your pet door. Replacement flap PAC11-11038 PERFECT FIT PET MEDIUM DOOR : The Pet door flap replacement is compatible with Pet-Safes Freedom Patio Panel Panel Door, Freedom Aluminum Pet Door, Plastic Pet Door,Extreme Weather Pet Door,Wall Entry Aluminum Pet Door.Sliding Glass Pet Doors EASY INSTALLATION: This pet door replacing flap easily installed with a screwdriver tool only . Remove the old flap and install the new pet door flap.Note:Please check the number of Screw holes on your dog door flap before placing an order WEATHER TIGHT & WEATHER RESISTANT:The soft flap made of flexible, durable and weather resistant TPU material ,it has a magnetic strip is attached to the bottom of the pet door flap, which can be reduces noise, and protects your house from outside weather PLEASE NOTE: 1pcs Doggie Door Replacement Flaps, and include screws .This is Non-Original Aftermarket Parts,but part of the aftermarket. Equal to or exceed the original performance