The Dometic DFSAD 12111 12,000 BTU Small Furnace is a compact, lightweight heater boasting a quiet operation thanks to reduced air turbulence. For easy and flexible installation, it may be placed vertically or horizontally. With the most duct configurations on the market, you can distribute heat exactly as you need it. This model also has a low amp draw of 2.4 amps. Outside access door sold separately. Dimensions: 7" H X 12" W X 20" D. Weight: 21 lb.