For wall installations, tunnel extenders can be stacked together to create a longer approach tunnel to the SureFlap® Microchip Cat Door, SureFlap® DualScan Microchip Cat Door or SureFlap® Microchip Cat Door Connect when it is installed in a wall.
The SureFlap® Cat Door Tunnel Extender fits snugly onto the 70mm long tunnel of our cat doors. Each tunnel extender adds 50mm to the overall length of the tunnel.
