【STURDY & ENERGY-SAVING】Classicmacher Weatherproof Dog Doors are made of strong, high-quality plastics. Additionally, they feature exterior slide-in locking panels to provide better protection for your home against extreme weather conditions and to reduce energy loss.
【LARGE DOG DOOR】 Doggie door for Large Dogs frame size is 13 7/8”(W) x 21 1/8”(H), Flap opening is 11 ”(W) x 16 1/4”(H). It fits paneled, wood, PVC, and metal doors 1 ” – 2 ” thick, and is designed for pets up to 100 pounds.
【FREEDOM & INDEPENDENCE】The white frame of plastic material is designed with a backplate, solid magnets, and magnetic flaps that allow your dogs to enjoy free entry and exit, potty breaks, and playtime without your help. Easily prevent any unwanted guests from entering.

【Flexible Size】The doggie door with expanding tunnel fits paneled, wood, PVC, and metal doors of 1 3/8” – 2 1/8” thick, Suitable for dogs up to 220/100/40 pounds.
【Strong and Durable】Medium Dog door are made out of Rugged Sturdy Aluminum, strong and durable for active dogs without worrying about breaking and bitten easily.
【Two Magnetic Flaps】Magnetic Flap of dog door designed to enable the door plate to quickly reset after being lifted, as well as keep an even tighter seal when closing.

【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 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.

FREEDOM AND INDEPENDENCE: Give your cats and dogs freedom to go in and out without your help, arrangement for potty breaks or play time by themselves.
DIMENSION AND TELESCOPING WIDTH: The telescoping tunnel accommodates door that are 1 3/8 – 1 31/32 in thick. Flap Opening: 10 1/4″W x 16 1/4″H. Frame: 14 1/4″W x 21 1/16″H. Cutout in Door:12″W x 18 7/8″H
EASY INSTALLATION: This pet door easily installed in all types of interior and exterior doors; cut-out template and step-by-step instructions are included, simple to follow instructions walk you through the install.