DESIGNED FOR L SIZE PETS :Pet Dog Door Replacement Flap Measures 10 1/8" x 16 7/8" (Width x Length).door flap have 5 holes on the top of the flap for adjustment,perfectly compatible with your pet door. Replacement flap PAC11-11039 PERFECT FIT PET LARGE DOOR : The Pet door flap replacement is compatible with Pet-Safes Freedom Patio Panel , 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: This ONLY ONE FLAP, and not include screws .This is Non-Original Aftermarket Parts,but part of the aftermarket. Equal to or exceed the original performance This is just a doggie door replacement flap The pet door flap is compatible with Pet-Safes Freedom Aluminum, fits for Pet-Safes Plastic Pet Door, Extreme Weather Pet Door, Wall Entry Aluminum Pet Door and the Freedom Patio Panel Pet Door