SureFlap Microchip Pet Door Tunnel ExtenderSureFlap tunnel extenders can be used to create a longerapproach tunnel to the SureFlap microchip cat flap when it is installed in awall.The SureFlap tunnel extender fits snugly onto the tunnel ofthe SureFlap microchip pet door and multiple extenders can be stacked togetherto form a tunnel of any length.The SureFlap microchip pet door's tunnel is 70mm (2 3/4”)long and each tunnel extender adds 50mm (2“) to the length of the pet door'stunnel.0fe,RcmdId ViewItemDescV4,RlogId p4%60bo7%60jtb9%3Fuk%601d70f%2B%3E0fe-14675500bfb-0x104-->
