Give your cat access to her litter box even with a closed door. This durable, transparent cat flap fits any interior door that is 1” to 2” (2.5 cm - 5 cm) thick. The 4-way locking system gives you ultimate control of the kind of access you want your cat to have. 
WARNING:

·  Small children can pass through door. 

Features

·  For dogs and cats up to 15 pounds

·  High-impact plastic frame

·  Fits interior doors 1 - 2 inches thick

·  Easy do-it-yourself installation

·  4-way lock: in only, out only, open, and locked

How to measure your pet

·  Pet Size: Up to 15 pounds

·  Flap Opening: 5 ¾ ” x 5 ¾”

·  Frame Dimensions: 7 ½” x 8”

·  Cut Out: 6 ½” x 7”