Hi there, I need to fit a dog flap in to an exterior wall - despite most of these products stating that they are suitable for most doors and walls, none of them seem to come with the tunnel lining bit that goes in the middle.  obviously I need one with smooth plastic/pvc though the wall for my dog's comfort so does anyone know where I can find one of these please?

many thanks,

Charlotte

Hi Charlotte - can't help with the liner, but I just wanted to make sure you've checked your house insurance to make sure your contents are still covered if you install one of these. If the flap leads into a room which isn't fitted with an external door and lock to the rest of the house, you may find your insurance policy is void.