PetSafe NEVER RUST Wall Entry Pet Door - Telescoping Frame - Insulates Better than Metal Doors, Energy Efficient Cat & Dog Door - Interior & Exterior Walls, Weatherproof, Easy to Install & Clean - S

INSTALL INTO YOUR WALL: This pet door is best for homes where it might not be possible to install a pet door into your human door

DURABLE FRAME WON'T RUST: Our pet door is made out of durable plastic that won’t rust like other steel options while also providing great insulation

TELESCOPING DESIGN FOR WALL INSTALLATION: Telescoping tunnel lets you use the door in walls that are 4 3/4 - 7 1/4 in thick; compatible extension kits sold separately for walls thicker than 7 1/4 in

DIY INSTALLATION: This do-it-yourself project easily installs in all types of interior and exterior walls; cutting 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

SMALL SIZE : Small size for cats or dogs up to 15 lb; flap opening measures 5 1/4 in W X 8 1/8 in H

GIVES YOUR PET FREEDOM: Let your cats and dogs come and go on their own schedule – perfect for potty breaks or play time

U.S.-BASED CUSTOMER CARE: Our pet product experts are here to help you and your pet and are available by phone, email or chat if you have any questions