The Emerson Climate White Rodgers 21D83M-843 Lb/109531A Surelight Repl Kit is a replacement kit that will rejuvenate your furnace or boiler's ignition system. It includes a SureLight ignitor, mounting bracket, and wire harness to easily replace worn or damaged components on your Emerson Climate White Rodgers 21D83M-843 control board.
https://www.partshnc.com/21d83m-843-emerson-climate-white-rodgers-lb-109...