Introducing the Infratech WD Series Dual Element WD3027BI 3000 Watts 277V 11 Amps Infrared Electric Patio Heater 33 x 8 x 3 in. Biscuit Color. This is a 3000 Watt 277 Volt 11 Amp heater. At 33 inches long, this heater will heat an area of 7 by 7 feet at a mounting height of between 7 and 8 feet. The WD Series heaters may be surface or flush mounted, however, it is the preferred model for flush mounting due to its deeper body which provides for better ventilation within the ceiling pocket. In comparison, the more slim bodied CD Series is better suited for a surface mount installation. This heater is available in Stainless Steel and eight additional colors as well as a Marine Grade Option. Compatible controls for this heater are the Duplex stack switch and all Custom Control options. Please keep in mind that the available Infratech heater voltages of 120, 208 and 240 are typical for residential properties, while 277 and 480 are more common for commercial. If you're not sure which voltage to choose, please consult with a licensed electrician. These heaters come with a full 3 year warranty from Infratech.