The Cat Mate Elite Tunnel Extensions for the Elite Series cat flaps can be added to form a tunnel through a wall. Each extension measures 2" in thickness. The Elite doors come with a 2" self framing tunnel extension; so if you have a 6" thick wall, you will need 2 additional extensions.

Note: Another example, if your wall is 7" thick; you will need 3 additional extensions. The exterior frame on the Cat Mate will sleeve tight over the Wall Liner extensions to fit your wall. ( In this example a 1" tunnel lip would extend beyond the exterior frame of the Cat Mate.)


If you are purchasing one of the Elite doors for the first time;
you can add tunnel extensions to your purchase and save on shipping costs

Cat Mate Elite 2" thick Tunnel Extensions for use when installing the Elite Series cat doors into a wall.

Ships same business day if placed prior to 3pm CST

Cat Mate Elite Tunnel Extensions
Sold individually