All aluminum wall tunnel kit makes it quick and easy to install your Power Pet Fully Automatic pet door. Creates an easy and appealing wall installation. Adapts any exterior wall for a weatherproof, professional looking installation. Features: Designed for use with the 12.38 in. x 16 in. Large Power Pet Door (PX-2). Wall Tunnel Kit allows you to quickly and easily install your Large Power Pet Door through a wall. Aluminum construction for high quality strength. Increases energy efficiency Includes: 1 Wall Tunnel Kit Intended Pet(s): Dogs, Cats up to 100 lb Material(s): Aluminum Color: White Product Dimensions: 12.25 in x 16 in Pet Opening Meets Airline Travel: Yes Product Weight: 6 lb Compatible With: PX-2, PX2-WF High Tech Pet Power Fully Automatic Wall Tunnel Kit for PX-2 | PetSmart