White-Rodgers-Universal Hot Surface Ignition Integrated Furnace Control 50M56U-8433 Fan Speeds- cool, low, heat & high heat speeds; Universal nitride ignitor kit - 21D64-2; 9 quick-select/quick-connect wiring harnesses; Red LED diagnostic flash codes with stored fault recall; Low voltage fuse protection, 3A replaceable automotive type. Product Specifications BRANDWhite Rodgers¢ WEIGHT LBS2.1 COLORWhite LOCKOUT TIMING SECONDS30 FUEL TYPENatural Gas / Liquid Propane FOR USE WITHHOT SURFACE IGNITION LIMITED WARRANTY YEARS1 MANUFACTURER'S PART NUMBER50M56U-843