Dog Door for Wall Steel Frame, Telescoping Tunnel & Double Food-Grade Silicone Flaps Pet Door, Doggy Doors with Secure Lock (Pets Up to 40 lbs) - Medium

Freedom & Safe Pet Access: Let your cats and dogs come and go freely for potty breaks, playtime or fresh air. No more frequent door-opening hassle for you. The built-in safety lock lets you control their access anytime, balancing convenience and home security | Heavy-Duty Durability Construction: Made of premium aluminum alloy, offering rust resistance, deformation prevention, and superior durability. Boasting an over 3x longer service life, it ensures long-term dependable performance | Double-Layer Food-Grade Silicone Flap: Made of premium double-layer food-grade silicone, this flap is 100% pet-safe and non-toxic for pets long-term contact; it stays ultra flexible and elastic with excellent high & low temperature resistance, not prone to aging, warping or cracking, and features a gap-free rate of over 95%, delivering 3050% better sealing fit | Dimension and Telescoping Tunnel: TBCPET medium-sized dog door features an adjustable tunnel, perfect for walls that are 4.13 to 7.87 inches thick. The flap opening measures 8.54 x 13.42 inches. Please carefully review the size chart to confirm if the size is suitable before purchasing | Perfect Fit for Small to Medium-Sized Dogs: Compatible with popular small breeds like Pomeranian, Chihuahua, Bichon Frise and more; also fits small-sized individuals of medium breeds (Toy Poodle, puppy Corgi, Shih Tzu). Maximum recommended weight: 40 lbs | Easy Installation: Installing this pet door in your interior and exterior wall is a breeze with our step-by-step instructions and cut-out template, hardware. Simple to follow instructions walk you through the install | Dedicated Support: 1-year warranty, any product issues are met with prompt troubleshooting that no unnecessary returns needed. We're here to help. Contact us anytime for support