SureFlap tunnel extenders can be used to create a longer approach tunnel to the SureFlap Microchip Pet Door when it is installed in a wall.

The Pet Door Tunnel Extender fits snugly onto the tunnel of the SureFlap Microchip Pet Door and multiple extenders can be stacked together to form a tunnel of any length.

The tunnel of the SureFlap Microchip Pet Door is 70mm long and each tunnel extender adds 50mm to the length of the pet door’s tunnel.