The Extra-Large Silver Deluxe Aluminum Pet Door with adjustable tunnel is designed for doors, walls, screens, and glass up to 2. 76 in. thick. Suitable for pets up to 220 lbs., the outer frame measures 16. 93 in. x 26. 77 in. and the flexible flap measures 14. 57 in. x 23. 43 in. Built with a stylish and durable aluminum frame, the flexible flap with ultra-clear viewing window lets your pets see out but still offers privacy to your home. The magnetic centring flap ensures the door shuts after each use to keep the weather outside. Secure your home and control your pets access with the included sliding security panel, easily fit to lock the pet door from outside access. The extra-large frame suits larger breeds, including Rottweilers, St. Bernards, Great Danes, Newfoundlands, Bernese, Pyrenean and more. Have complete peace of mind knowing that the Deluxe Aluminum Pet Door is designed to last and includes an industry leading 3-year limited manufacturer's warranty. Give your pet the freedom to roam with a Hakuna Pets pet door. Size: extra large.