SureFlap tunnel extenders can be utilised to extend the approach tunnel to the SureFlap microchip pet door when it is installed in a wall.

The SureFlap tunnel extender fits perfectly onto the tunnel of the SureFlap microchip pet door, and it's possible to stack numerous extenders together to create a tunnel as long as necessary.

The SureFlap microchip pet door tunnel is 70mm in length, and every tunnel extender increases the length of the pet door tunnel by 50mm. Available colours are white and brown.