Meet the Kitty Pass: a cute interior cat door that lets your cat in and out without you having to open any door. It has a wide opening to accommodate cats up to 20 lbs safely. It easily fits standard interior doors. The Kitty Pass comes in semi gloss white but you can paint it if you want.
According to the manufacturer, the Kitty Pass takes about 25 minutes to install. What do you think? Have you found better solutions?