PetSafe Interior Cat Door: 4-Way Locking, Indoor Pet Door Flap - Tinted Privacy Door for Cat Litter Box or Pet Feeder, Built-in Door Lock, Durable Door Frame, DIY Easy Install, Hardware Kit IncludedINTERIOR CAT DOOR: Give your cat private access to the litter box or food through any interior door, while keeping the dog and kids out 4 LOCK OPTIONS: Customize your cats access with 4 locking options; locked, unlocked, enter only, exit only DESIGNED FOR YOUR CAT: The high impact, white plastic frame with a transparent, hard flap is designed for your cats preference and makes it easy to use EASY INSTALL: Fits interior doors that are 1 1 8 in to 2 in