![155980](https://img.wattagnet.com/files/base/wattglobalmedia/all/image/2015/04/an.155980.gif?auto=format%2Ccompress&q=70&w=400)
Roxell Shenandoah Quad-Glow heater line includes multiple direct-spark ignition models: a low-pressure, 24-volt heater with zone control for use with propane, natural gas and butane/propane mixed fuel; a high-pressure, 120-volt heater with zone control for use with propane or natural gas; and a high-pressure, 120-volt heater with zone control for use with propane, natural gas or butane/propane mixed fuel. Heaters with pilot ignition also are available. Quad-Glow heaters deliver 80,000 BTUs of infrared heat.