How do I replace the flap for my Wall Entry Aluminum Pet Door?

The Wall Entry Aluminum Pet Door flap slides into a channel on the top of the frame. To replace the flap, the door must be removed from the installed surface and the screw (either on the right or left side of the top of the frame) must be removed. The old flap can now slide out and the new one will slide in.

Door Size & SKU Replacement Flap Size & SKU
Small (PPA11-10915) Small Classic Flap (4-0110-11)
Medium (PPA11-10916) Medium Classic Flap (4-0111-11)
Large (PPA11-10917) Large Classic Flap (4-0113-11)