For wall installations, tunnel extenders can be stacked together to create a longer approach tunnel to the SureFlap Microchip Cat Flap, the DualScan Microchip Cat Flap or the Microchip Cat Flap Connect when it is installed in a wall. The Cat Flap Tunnel Extender fits snugly onto the 70mm long tunnel of our cat flaps. Each tunnel extender adds 50mm to the overall length of the tunnel.
Please note this is only suitable for the Cat Flap version of the Sureflap range and will be too small for the Pet Door.