PetSafe Microchip Cat Flap Tunnel Extension - Tunnel Extension for PetSafe Microchip Cat Flap

PetSafe Microchip Tunnel Extension is a helpful accessory for installing the PetSafe Microchip Cat Flap in very thick walls or doors. The tunnel should be placed in the opening between the inner and outer sides of the flap to ensure a safe, smooth finish in the space through which the pet moves. It extends the built-in tunnel of the cat flap by an additional 5 cm. You can add a single or multiple extensions.