DIY Doggie Door for screen door. I looked and looked and could find what I wanted, so I went to Home Depot and for under $12 I made exactly what we need! One 12 ft piece of plastic trim, a dozen 3/4" nuts and bolts. Cut to fit dogs and bolt together onto screen. Cut screen inside trim and add a little weight to bottom. Dogs love it and I can close my screen door without the dogs scratching to go in and out.