Sunpak patio heaters extend your time outdoors and keep your dining and entertaining patio areas comfortable and warm, the true artisan way! This SunPak commercial two-stage (S34 B TSH-NAT) ceiling or wall mounted gas patio heater is simple to use and efficiently heats an approximate 12-foot by 12-foot area using infrared energy and a ceramic burner, which heats objects and people, not the air. The commercial quality high-temp black powder-coated patio heater has an electronic ignition with automatic relight and flame sensor feature. It can be set on low (25,000 BTUs) or on high (34,000 BTUs) using the included two-position wireless duplex wall switch. Ideal for wind protected areas up to 10 mph, the heater can be mounted at any angle between 0 and 30 degrees with the included mounting hardware. All Sunpak heaters are CSA design certified to rigid ANSI standards and include a 120 volt-to-24 volt transformer.