Hole plugs cover the installation holes for the Endura Flap Door Mount, and Endura Flap Wall Mount. The pet door hole plug comes in all colors and works for all sizes of the Endura Flap. To install, line the hole plugs with the rivets in your door frame. They should fit over the diameter of the holes your drill bit made into your pet door frame. They can then be pushed in or snapped in to place for a clean installation look.