Its half round shape fits easily through the door of the home and allows for the pet to stay on or off the heated surface. The Igloo Style Heated Pad provides reliable, affordable comfort. Indoor or outdoor use. A faux lambskin and washable K&H Lectro‐Cover is available for every size Lectro‐Kennel Pad. All KH heated beds and pads feature dual thermostats and are designed to warm to your pet’s normal body temperature when he/she lies on the pad. When your pet is not on the pad, the heat will dissipate into the air and the surface temperature will vary according to the ambient air temperature. All KH heated products are thermostatically controlled to heat to 102° F, regardless of the size. Dual thermostat simply means there are two internal thermostats that will keep the surface of the bed at 10-15° F above ambient air temperature when your pet is not on the bed. When your pet lies on the bed, it will warm to about 102° F. Fits the Dogloo or Indigo houses Uses 40 watts The half-round shape covers half the floor surface allowing pets to naturally choose when they want warmth. An internal thermostat warms to your pet’s normal body temperature 5 1/2-foot steel-wrapped cord.