Step one is need of a window and tools to modify a Plexiglas insert replacing the screen.
1 Next is lining the Plexiglas cut to size with a gasket to prevent cool air draft, I chose duct tape stuck around edges.
2 After cutting the specified entry for your size cat, save the cutout to trim and fit as the swinging flap, I also chose duct tape to secure the swing. Gaskets included fabricated with duct tape.
3 Finally fit your project in the appropriate window housing and set loose with rolling open the actual window in this case doubling as the door lock. What a grand idea just waiting to dissolve. Enjoy, and get a professional cut on the glass each time. My blade skills cracked my glass.
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