PetSafe Large Wall Entry Pet Door Replacement Flaps

Features: One-piece pet door flap. Replacement pet door flaps for Classic and PetSafe brand patio panel pet doors. These are single flaps and fit all PetSafe or US Pet Products pet doors using the single flap. Sizes: Small (4-0110-11): 5 3/8"W x 8"L. Medium (4-0111-11): 8 1/2"W x 12"L. Large (4-0113-11): 10 1/2" W x 15 7/8"L. Extra Large (A04026-4-11): 15"W x 23 3/4"L.