This cat door interior door provides access for your cat to their own space,allowing entrance to food,water or the litter box,even thought the human door is closed. [ 4-way Locking mechanism ]: The 4-way lockable cat door features both in and outt,only in,only out,and fully locked modes,easily control with rotate knob to keep your pets go in or out. [Application]: The cat door is good for interior and exterior use.Outer Size:10.03 x 2.36 x 11.81(D x W x H),Inner size:7.87 x 8.66(D x H),designed for cats up to 25 lb ,easily fits any interior wood,PVC,metal doors 12 - 2 in thick. [Easy to Setup]: The pet door for cats come with a full size cutting template to make installation a breeze,can be installed in cupboards,garage,laundry room,closet,utility room,bedroom,bathroom and litter box cabinet doors. [Sturdy & Weather-resistance]: Frame Made of strong ABS plastic,Flap Made of high-strength Acrylic,the frame and flap of kitty door are solidly built,ensures operation. The cat flaps door are fully brush sealed with magnetic closures for total weatherproofing and minimum energy loss from the house,reduce noise,keeping away bugs and the smell of cat litter.