Amazon.com : PetSafe Installation Adapter, Mounting Adapter for Installation of PetSafe Microchip Cat Flap and Manual Cat Flap, for Glass, Walls and Metal Doors, White : Pet Supplies
Manual-Locking Cat Flap - PetSafe® UK
Amazon.com : PetSafe Microchip Activated Cat Flap, Exclusive Entry, Easy Install, 4 Way Manual Locking, Energy Efficient, Draught Excluder, Convenient, Brown (New Version) : Pet Supplies