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Note: These doors can be installed into metal doors. Follow directions included with the unit.
The activation range will be 2-3 inches, slightly less than in a wood door.
The Elite Series cat flaps will fit any door up to 2". You may install these doors into walls by adding the necessary number of Tunnel Wall Liner extensions. Each extension measures 2" in thickness.
Click Here to Purchase Tunnel Extensions Only
Note: For 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.)