This is a large size house measuring 21"x21"x22"h on the outside and 16"x16"x14"h on the inside. The floor, walls and attic are insulated. The house is heated by a 50 watt infrared bulb installed into a recessed light fixture in the ceiling so it is out of the way. There is an adjustable thermostat mounted inside the door, the bulb only comes on when heat is needed. This house has a Large STANDARD DOOR(wood frame vinyl flap). The house comes with a 20 ft cord. The floor is vinyl with removable carpet on top, the other interior surfaces are covered with carpet. The front of the house opens for easy access and cleaning. The siding is stained BARN RED and the Trim is stained WALNUT, the entire house is finished with a clear penetrating sealer. SHIPPING WEIGHT 70LBS OVERSIZE 24"X25"X25"