Channellock Fluorescent Shop Light Fixture With Heater The Channellock shop light and heater has a metal anodized aluminum housing with 2 switches to control Off/On for light and heater. 6' SJTW 18/3 cord. Uses (4) 23W CFL spiral type bulbs. 650W crystal heater, for replacement bulb refer to Model No RP-HT-BULB (SKU 500158). Minimum mounting distance from ceiling: 1'. Minimum mounting distance from side wall or objects: 3'. UL listed.