This is a large heated outdoor cat house. It measures 21"x21"x22"h on the outside and 16"x17" on the inside. It has a vinyl floor with a piece of removable carpet on top. The interior walls are lined with Cedar, a natural insect repellent. The exterior siding and trim are Left natural, the entire house has several coats of the Marine Varnish Clearcoat. The roof IS made of a more durable composite material that has a knotty pine texture ans is painted black. This house has 2 upgraded Trixie doors that fit average size cats up to 14lbs. , one on the front and one in the rear. One square window, House has a 40 ft cord. The base of the house is treated lumber that will not rot or decay. The front of the house opens for easy access and cleaning. The house is heated with a 50 watt infrared bulb installed in a recessed light fixture in the ceiling so it is out of Kitty's way. Has the upgraded adjustable thermostat right inside the door that you can set and forget. The bulb only comes on when heat is needed. Also includes the Heated Pad, Solar Fan, Weatherproof Outlet, 3 Qt.Heated Bowl, and the Paw-Print knob for more info on these add-ons see "Upgrades and Add-Ons".