HANIML Extra Large Dog Door for Exterior Walls Heavy Duty Aluminum Doggy Door with Telescoping Tunnel Energy Efficient Double Flaps Pet Door for Medium Large Doggies Weatherproof & Security

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【HANIML Extra Large Dog Door】: Product Size: 17 3/5(W)*27 4/5(H) inch, the size of flap: 11 1/5(W)*16 1/2(H) inch. which designed for pets under 220 pounds.Please measure the width and height of your dog to make certain that the pet door is fit to your pets.
【Telescoping Tunnel】：The dog door equipped with extended tunnel which is suitable for 4 to 8 inch thick interior & exterior walls or doors.
【Freedom and Independence】: This large aluminum dog door has double Flaps with 6pcs magnetic, which permits the dog to go into and exit independently and robotically returns after the dog passing- Free them in garden and house by themselves.
【Durability and Long Lasting】: The doggy door is made of top quality aluminum, no rust, no corrosion, flap is made of vinyl, rugged construction, which is strong and durable enough to against cold Weather & insulates heat.
【Safety and Energy Efficient】: HANIML Extra large dog door comes with slid-in closed panel, providing weatherproof and energy efficient in rainy and windy weather. keep your own home safety and keep watch over your dog’s funny playing time and potty breaks with lock system.
【Easy Installation】: The large dog door comes with guide line and detailed instruction that show cutout size template and installation ways, which is easy to operate. Save your time. Please leave enough overlap width between the two dog door frames to install rivets and screws to improve two frame.