View on LOZ Suggested Retail: $154.99. 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 - L. 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.. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.