Here is a waterproof wooden cat house that gives your kitties a place to relax indoors or outside. The Ketive Outdoor Cat Condo has room for 3 cats under 18lbs, ducks, rabbits, hens, and other pets. It has two openings, so it gives your cats a way to escape. The roof can be removed for cleaning.
This cat house measures 24.4 x 22.5 x 21.7″ on the inside.