Infratech | WD5024 (21-2200) 39" Stainless 5000 Watt Patio Heater If you require the maximum amount of heating power with a small footprint, then this 39" x 8" x 3" overhead electric patio heater is for you. It requires a 30 amp (at 240 volt) circuit. The Infratech 6" x 6" stock brackets provide the required 6" top clearance from combustibles (above) when the heater is pointed straight down from the ceiling. However, when the heater is tilted the clearance is reduced by 2" to 3". Choose from the optional 9" and 12" long custom brackets to provide the specified clearance for Infratech heaters that are tilted.