Product details:

The Ideal Designer Series Original Pet Door is a great budget solution for a pet door installed in a human door. The pet door is approximately 9X 15 and can be installed in any door 1 1/4- 1 3/4 thick. The easy to install pet door comes with a slide in locking cover so you can restrict access to your pet, or remove the the cover to give them the freedom to come and go as they please.