Two available: Small: 44" wide, 23" tall, 15-1/2" deep Large: 72-1/2" wide, 28" tall, 14-1/2" deep Two boxes available: small: $50 large: $65 The small one has a screened top that is just resting on it, but could be affixed in whatever manner you prefer. The larger one only had makeshift boards on top. Sold as-is, as I won't have time to make a top for it for a while, and if I do I'll raise the price a bit. Both have removable bamboo flooring slats. Both wire screens are held in with screws so they could be replaced with a different material if desired. The mounting hardware I used is anything but elegant, but served the purpose, all available if wanted. Both were designed to be under eaves, not fully exposed to the elements, like the kitties (=ↀωↀ=). The larger box has some corner supports on the front because I was considering using legs under it. Both come with the window entrance board with preinstalled cat doors. with 3D-printed ventilation ports with magnetic covers (I had them connected to 4-1/2" air duct to vent litter box smells). The smaller box was near a bird feeder, so has some complimentary bird poop (I can wash it off).