Each UnderCover Pet House is insulated with a Thermal-Ply insulation that not only keeps your pet warm in winter, but gives them a cool place to relax during the heat of the summer. It's perfect for the neighborhood feral that is adamant about staying outdoors, or for the indoor kitty who insists on hanging out near you while you're in the garden. Each house is individually hand crafted with the high quality workmanship and materials you have come to expect from UnderCover including: Cedar construction: The wood of choice for long-lasting outdoor use. Thermal-Ply insulation that is placed inside the floor, walls and ceiling. Simple instructions included for fast assembly with common household tools. Your cedar pet house will be delivered unassembled. It takes about 20 minutes to assemble, guided by the easy instructions All Standard Insulated Cedar Cat Houses are easy to clean. Roof is removed easily by 4 screws. Large Insulated Cedar Cat House - Small Dog House #UC-LCH101 This house is big enough to accommodate 2 cats or a small dog Dimensions: Exterior: 24” x 23” x 21” (D x W x H) House Floor: Interior: 19” x 18” (L x W) Door opening: 7” x 9” (W x H)