Clean and cost-efficient comfort makes these the perfect heaters to add soothing atmospheric warmth to your smaller-size rooms. The slim, compact design of each unit allows it to tuck out of the way on any outside wall. They use no electricity and are ideal for bedrooms or studies since each unit vents directly to the outside. Housed in durable, textured cabinetry with a beige color, these wall furnaces will add endless comfort to any application. Dimensions: 20-1/4" x 9-3/8" x 24-7/8" Min Clearance: Top 12", Side 1", Bottom 0" Venting: Wall Depth Min 4-1/2", Wall Depth Max 13", Vent Opening in Wall 6-1/4" Dia. LP Gas Inlet 1/2" NPT Pilot and Main Burners Include Automatic Shut-Off 10 year Limited Warranty Dimensions: 20-1/4" x 9-3/8" x 24-7/8" Min Clearance: Top 12", Side 1" Venting: Wall Depth Min 4-1/2", Wall Depth Max 13", Vent Opening in Wall 6-1/4" Dia. LP Gas Inlet 1/2" NPT Pilot & Main Burners w/Automatic Shut-Off 10 year Limited Warranty Millivolt Wall Thermostat with Positive Off (DV2155SG model)