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 repellant. This house includes the commercial door upgrade and a rear 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 60 watt Ceramic Heat Emitter installed in a recessed light fixture in the ceiling so it is out of Kitty's way also has an aluminum grill for Kitty's protection. Includes the upgraded adjustable thermostat right inside the door and a thermometer on the back wall. The bulb only comes on when heat is needed. The siding is Simulated brick and the trim is White PVC that will last forever and never need painted.. House also includes the Heated Pad, a Square Window, and the Cat-Face knob. Window placement may not be as pictured, could be on the left side or the right side.