SureFlap Microchip WALL Tunnel Extender - Large Size For Microchip Pet Door

SureFlap Wall Tunnel Extender For Use With The SureFlap Microchip PET DOOR

Required for most wall installations.

The SureFlap Pet Door Wall Tunnel Extender fits snugly onto the tunnel of the SureFlap Microchip Pet Door. Multiple extenders can be stacked together to form a tunnel of any length as seen in the photos. The tunnel of the SureFlap Microchip Pet Door is 70mm long and each pet door tunnel extender adds 50mm to the length of the pet door’s tunnel.