Large Cat Flap Pet Door Convenient For Cat Interior Door For Small Medium Big Cats Hides Litter Box And Cat Food Hollow Door For Pet Interior Glass DoorMaterial: ABSColor: WhiteWeight: 240gSize: Length 22.5*Width 27*Total Thickness 5.5Inside: 17.5*Inner Groove Thickness Is 3.5cmLarge Cat Door Beekeeping Breeds: You Have A Bigger Kitten Like Maine Coon, Burmese, Egyptian Mau? This door cat fits most cats. The most secure CAT PORTAL can be found:Most pet doors for cats are fastened with thin tape. But this kitty door attaches firmly with sturdy screws. It installs in minutes; Stays tightly in placeKeeps larger dogs at bay:This large cat doorstop your big-breed dog from getting into cat food and cat litter. Not annoying flap: Have you ever tried training your cat to use flap doors for pets? It's an exercise in frustration. Luckily, our cat door is 100% flap-free, so your pudgy felino can get through. Fits Fixed and Hollow Door: Unlike most big cat doors, our cat door fits interior doors with a size of 22.5x27cm(HxW). The unique design protects your cat's paws from getting stuck in a hollow core door. Packing List:1pcs cat door8pcs screws8pcs screw cap