Infratech 21-2200BL 39" WD-Series Dual Element Black Infrared Heater 5000W 240V - High-powered, dual-element WD-Series fixtures provide more concentrated heat for large scale coverage needs. Our low profile heaters are suitable for outdoor installations and offer a pleasing, streamlined look due to low clearance requirements. Infratech heaters may be flush mounted into a non-sloped ceiling using our optional flush mount frame, or may be mounted to a wall, ceiling, or pole mounted.