For Large Doors:Pet Door Replacement Flap Measures 10 1/8" x 16 7/8" (Width x Length).Each door flap with 5 holes on the top for adjustment. Perfect fits Large pet door. Replacement flap number PAC11-11039 Compatible With Petsafe Doors Large. Easy Installation:Only one person can complete the work in a few minutes with only a screwdriver. Remove the old flap and install the new pet door flap. It only takes one step. Translucent And Not Crack: Flap made from flexible, durable and weather resistant material that will not crack in winter.The color of pet door flap is translucent so it will not block the pet's view. Magnetic Strip: At the bottom of pet door flap with Magnetic strip. Magnetic pet door flap allows pets to come and go freely,compatible with Petsafe replacement flap PAC11-11039 and Freedom pet door PPA00-10960. Compatible Model: The Pet door flap which we offer is an aftermarket replacement that is compatible with PetSafe Freedom Patio Panel / Freedom Aluminum Pet Door/ Plastic Pet Door/Extreme Weather Pet Door/Wall Entry Aluminum Pet Door. Large size dog door flap that compatible with PetSafe Freedom pet door PPA00-10960, HPA11-10968, PAC11-11039 model pet doors flap.