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 PetSafe 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 COST-EFFECTIVE & PET-FRIENDLY：Provides a reliable and affordable replacement without the need to change the entire door. Gives your pets easy access while keeping your home quiet, safe, and secure. 2 PACK DOG FLAP WITH SCREWS INCLUDED：Comes with 2 PAC11 11039 dog door replacement flaps and screws, offering more value and convenience. Easily replace both flaps or keep a spare for the next replacement. This is Non-Original Aftermarket Parts The product is not sponsored or endorsed by, or affiliated with the brands it fit, including PetSafe