CAT and DOG doors for the window! NO cutting required. Installs in minutes and is completely removable. We build this product custom to SIT in your window tracks. Allowing your PET to come and GO AS HE pleases. NO more waking UP in the middle of the night wondering if your feline friend is safe and SAY goodbye to your litter BOX! your furry friend will USE the outdoors. Made with a solid PVC base that is weather and mold resistant and a 6" X 6" 4 WAY locking flap. We offer Plexiglass options AS well! check OUT OUR WEBSITE for more product details. We are committed to helping animals in need. We will donate 5% of your standard order to a Charity of your choice.