【FREEDOM AND INDEPENDENCE】Whether to enjoy sunny by themselves, or arrange for potty breaks, RESCUMASCER dog doors allow your pet freedom to go in and out without your help, thus can significantly reduce the level of anxiety of your pet.

【DIMENSION & TELESCOPING WIDTH】Aluminum dog door frame size is 13 3/8''(W) x 19 5/8''(H), Cutting size is 12 1/8'''(W) x 18 1/2''(H), Flap opening is 11 1/8”(W) x 16 1/4''(H). It fits paneled, wood, PVC, and metal doors 1 3/8'' - 2 1/8'' thick, and is designed for pets up to 100 pounds.

【Rugged & Energy-Saving】RESCUMASCER extra large dog doors are made out of rugged new aviation aluminum alloy material that is proven to be sturdy and stainless. Magnetic Flap designed to enable the door plate to quickly reset after being lifted. Additionally added exterior slide-in locking panels to better against extreme weather, and air drafts.

【EASY INSTALLATION】The dog door is easily installed on all types of interior & exterior doors; We provided detailed instructions, a cutting template, and installation hardware( Self-tapping screw, rivet,etc). Notice it will be better to use Hand Riveter for hollow door to futher secure.

【LIFETIME GUARANTEE】RESCUMASCER offers lifetime free customer service. We will replace missing parts or broken parts of the aluminum dog doors caused by the manufacturer at no charge on your side. We will reply within 24 hours. Our priority is to make you satisfied!