Telescoping Width - The telescoping tunnel accommodates walls that are 4 3/4 - 7 1/4 in thick; compatible extension kits for thicker walls over 7 1/4 in are sold separately. Easy Installation - This do-it-yourself project easily installs in all types of interior and exterior walls; cut-out template and step-by-step instructions are included. Energy Efficient - The double-flap provides weatherproofing and energy efficiency, and a slide-in closing panel adds extra insulation when your pet is not using it; PVC frame withstands UV exposure. Multiple Size Options - Small for pets under 15 lb, medium for pets up to 40 lb, large for pets up to 100 lb.

 

Door Size	Pet Size	Flap Opening	Frame Dimensions	Classic Cut Out Size	New Freedom Cut Out Size
Small	Up to 15 pounds	5 1/4" x 7 1/2"	9 1/4” x 13”	6 3/8" x 10 1/16"	6 3/4" x 10 5/8"
Medium	Up to 40 pounds	8 1/4" x 11 1/4"	12 1/4" x 17 1/8"	9 9/16" x 14 5/16"	9 7/8" x 14 3/4"
Large	Up to 100 pounds	10 3/8" x 15 3/8"	14 1/4" x 21 1/16"	11 7/16" x 18 1/8"	12" x 18 7/8"