Framed Cat Enclosure in Middle Swan. Stephanie and Wayne wanted to provide a space for their two cats to have time away from the new puppy. They also wanted a tunnel to attach the patio enclosure to a freestanding enclosure situated on the lawn. The framed patio enclosure has two access doors with a tunnel that connects to the freestanding enclosure. The cats now have their own undercover space plus the enjoyment of moving freely to the outdoor enclosure for some sunshine.