This is a LARGE size heated cat house. It measures 21"x21"x23h" on the outside and 16"x17"x14"h on the inside. It has vinyl on the floor with a piece of removable carpet on top and the interior walls are lined with Cedar, a natural flea & insect repellent. This house has one standard size 6" Cat Door. House has a 20 ft cord. The base 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. There is an adjustable thermostat right inside the door. The bulb only comes on when heat is needed. The siding is Light Blue and the Trim is Ancient Burgundy. Also includes the Cat-Face knob.