For wall installations, tunnel extenders can be stacked together to create a longer approach tunnel to the SureFlap^® Microchip Pet Door or the SureFlap^® Microchip Pet Door Connect when it is installed in a wall.

SureFlap^® Pet Door Tunnel Extender fits snugly onto the 70mm long tunnel of our pet door. Each tunnel extender adds 50mm to the overall length of the tunnel.