If your furnace isn't lighting, this flat-style hot surface ignitor might be the fix. It's an OEM-compatible replacement that fits a bunch of brands, including Rheem, Ruud, Weather King, and Corsaire furnaces. It specifically replaces the Norton model numbers 201N, 0802, or 201N0802. It's brand new. The ignitor is the part that glows red hot to light the gas burners. If it's cracked or doesn't glow, your heat won't come on. This is a common DIY repair for handy homeowners – usually just a couple of screws and a wiring plug. No UPC listed. Always turn off the power to your furnace before installing! Keep warm this winter by fixing your furnace yourself for a fraction of the service call cost.