INTERIOR CAT DOOR: Give your cat private access to the litter box or food through any interior door, while keeping the dog and kids out 2 LOCK OPTIONS: Customize your cat’s access with 2 locking options; locked and unlocked DESIGNED FOR YOUR CAT: The high-impact, white plastic frame with a transparent, hard flap is designed for your cat’s preference and makes it easy to use EASY INSTALL: Fits interior doors that are ½ in to 2 in thick; detailed instructions, cutting template and hardware include