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 30–50% better sealing fit

Dimension and Telescoping Tunnel: TBCPET large-sized dog door features an adjustable tunnel, perfect for walls that are 4.13 to 7.87 inches thick. The flap opening measures 10.37 x 17.22 inches. Please carefully review the size chart to confirm if the size is suitable before purchasing

Ideal Fit for Medium to Large Dog Breeds: Compatible with popular medium breeds like Beagle, Cocker Spaniel, Corgi, etc.; also perfect for large breeds including German Shepherd, Labrador Retriever, Golden Retriever, Husky, etc. Maximum recommended weight: 100 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