PetSafe Pet Screen Door - Screen Pet Door and Dog Doors from petco.com

It's the dog door for your screen door or window.

Swinging Screen Pet Door with metal mesh screen snaps directly onto your existing screen for quick and easy installation.

High impact polypropylene frame.

How to Install Your Pet Screen Door

1. Remove your screen door or window screen and place it on a hard, flat surface with the outside of the screen facing up.
2. Separate the two parts of your Pet Screen Door, making sure the locks are in the unlocked position.
3. The center of the Pet Screen Door should be at your pet's shoulder height. Place the frame (with the grooves up) under your screen door or window in this location.
4. Is your screen door metal or fiber? If it is metal, cut around the entire edge of A. If it is fiber, cut around B. Using the grooves as a guide, cut with a small, sharp knife. Hold the Pet Screen Door frame firmly so it doesn't move during cutting. Remove the cut-out portion of the screen.
5. Place the front section of the outer frame into position on the back section, trapping the cut edge of the screen. Using a mallet, tap the two frame sections together until they are firmly joined all around. Replace your screen door or window screen. Urge your pet through the door using a treat.Tools You'll Need
   • Hobby knife
   • Tape measure
   • Mallet