SureFlap Microchip Pet Door 50mm Tunnel Extender By Sureflap
The Pet Door Tunnel Extender can be used with the SureFlap Microchip Pet Door when installing the product in a wall. The existing tunnel length on the pet door is 70mm. Each tunnel extender adds 50mm to the overall length of the tunnel. Tunnel extenders can be stacked together to create a tunnel of any length. Hole cut dimensions: 207mm (W) x 234mm (H).