The Rheem-Ruud SP21099 Burner Assembly Kit ULN Self-Power is a replacement burner component designed for compatible Rheem and Ruud gas-fired heating equipment. It supports the combustion process by mixing gas with air and producing a controlled flame to generate heat for the system. The self-powered design supports burner operation without relying on a separate external power source f... https://www.partshnc.com/sp21099-rheem-ruud-burner-assembly-kit-uln-self-power