Double the warmth with Infratech's WD-Series heaters. This high powered unit features dual element, to provide a more concentrated heat. This makes the WD-Series an ideal choice for recessed installation, premium outdoor heating applications, and spaces with 8' to 12' mounting heights and large scale coverage areas. Infratech is 90% energy efficient, UL listed for outdoor and indoor use and are easy and inexpensive to operate. This heater is ideal for use in fine homes, restaurants, hotels and more. Includes 6 Stainless Steel Mounting Kit. Features 4,000 watt. 16.7 amps. 13648 BTU's. UL listed. Outdoor or Indoor use. Quartz Element. Approximate 5,000 hours of use on quartz element. 0 to 60 Deg Mounting Angle. Minimal Maintenance Costs. Flush Mount Kit Available #18-2300. 2 Year Warranty. Made in the USA. Specifications Overall Dimensions 39 L x 8.19 W x 5.38 H . Mounting Height 8' to 12'. Approximate 8' x 10' Heat Coverage.