PetSafe Pet Door Replacement Flap Please refer to the measurement diagram to measure and select your replacement flap Replacement flap for the Large PetSafe Classic Pet Door, Large Deluxe Patio Panel Pet Door, old version of Large Wall Entry Aluminum Pet Door and old version of Larson Storm Door with Classic Pet Door One piece flap made from soft, tinted vinyl with solid top and magnetic closure Large flap size measures approximately 10" W x 15" H; 4 rectangle bumps at top of flap and 3 magnets at bottom of flap Manufacturer's replacement flap part number 4-0113-11 or 700-416 at top of flap PetSafe Brand is an industry leading US manufacturer of pet behavior, containment, and lifestyle products since 1991, helping millions of people and pets each year Frame Dimensions:12 3/4" x 18 3/4"-Deluxe Patio:13 1/2"-Wall Entry:14 1/4" x 21 1/16" The bottom of the flap has a thin, black weather sweep without ridges.