【Compatible with】：These PAC11-11039 replacement flaps are Designed specifically for PetSafe Freedom dog doors, Verify screw hole alignment before installation for a perfect fit, restoring full functionality to worn-out doors with torn magnetic strips or poor sealing 【Fits Large Sized Pets】: PAC11-11039 Pet door replacement flap measures 10 1/8 inches (W) x 16 7/8 inches (L), the insulation pack measures 10 1/16 inches (W) x 16 7/16 inches (L) 【3-in-1 Extreme Weather Protection】：Includes 2 Dog door replacement flaps + 1 insulated thermal flap for layered defense against harsh conditions. The weather-density material blocks cold, heat, rain, and humidity, maintaining indoor comfort year-round. Verified by users to withstand freezing temperatures, intense sun, and moisture without warping 【Magnetic Seal for Pest & Draft Prevention】Built-in strong magnetic strip at the bottom ensures instant closure after pets pass through. Creates a tight barrier against in -sects, wind, and outdoor temperatures-—ideal for large dog door flap replacements where frequent entries/exits demand reliable sealing 【Save 70% vs New Dog Door-– Bulk Value Pack】: Why buy the whole door? Replace PAC11-11039 Doggy door replacement flaps at 1/3 the cost. Keep spare flaps for emergencies – dogs destroy an average of 2 flaps yearly! This is Non-Original Aftermarket Parts,but part of the aftermarket. Equal to or exceed the original performance.The product is not sponsored or endorsed by, or affiliated with the brands it fit, including PetSafes DESIGNED FOR MEDIUM SIZE PETS :Pet Dog Door Replacement Flap Measures