For larger dogs that need more clearance, this X-Large pet door uses a 13 5/8 x 23 5/8 inch flap set into a full metal frame, big enough for large breeds to pass through without ducking or squeezing. Double magnetic flaps sit flush to reduce wind, rain, and dust getting into the house, while still opening easily under light pressure so pets aren't fighting the door every time they go in or out. It mounts into interior or exterior doors, garden doors, or walls between 1 1/16 and 2 inches thick, and comes with all the hardware needed for setup in a few minutes. At 15.4 pounds, the frame is heavier than the smaller sizes in this line, reflecting the larger flap and reinforced construction needed to stand up to a big dog's daily use.