Half round heating pad for dogs fits a round or dome shaped dog house (not included) or indoors. The half-round shape covers half the floor surface allowing pets to naturally choose when they want warmth. Keep your dog house and dog warm with the large sized heating mat. The pet can lay on the dog heating mat or you can hang the mat on a wall. Easy to clean. Great indoors and outdoors. Large Igloo heated mat dimensions: 17.5 inches wide x 30 inches long. Uses 80 watts of power. Steel-wrapped cord is 5.5 feet long. Internal thermostat keeps pad at 102 degrees when in use. Designed specifically for igloo style dog houses such as the Dogloo® or Indigo® houses. Dog house not included. Waterproof.