Infratech electric patio heaters are over 90% energy efficient, operate for just pennies per hour, and emit a subtle, pleasing glow that will not blow away in windy conditions. Enjoy odorless, radiant warmth that will not detract from the aroma of an alfresco meal in the outdoor kitchen or interfere with the view from a rooftop deck. Infratech Slimline Series of outdoor electric patio heaters virtually disappear into the surrounding decor, and are capable of withstanding years of outdoor use. Slimline heaters are ideal for surface mount applications up to eleven feet, and feature a T- slot for flexible mounting options using the included brackets. The Infrared SL4024SV silver heater is UL listed for indoor and outdoor use and powered by a 240 volt electrical connection. The Infratech SL4024SV 4000 watt patio heater is capable of warming an area approximately 10-feet by 10-feet and mounts to a wall or ceiling for versatile installation. Boasting outstanding performance and durability, Infratech uses medium wave infrared heat to produce a pleasing glow with no glare or obnoxious light. These American-made patio heaters are fashioned out of recyclable materials and operate with zero greenhouse emissions, odors, or ultraviolet light. Unlike other heaters, infrared heaters provide radiant heat to people and objects, not the air which can be blown away. All Infratech units include brackets that provide the required minimal clearance from combustibles and the quartz electric elements are designed for up to 5000 hours of use. All Infratech patio heaters are Made in the United States and features a 3-year warranty!