johntruck Replace for FAN 50 Universal Ignitor Board with Fan Control For 12 VDC Furnaces. Designed to compatible with Suburban/Atwood/HydroFlame Furances. Compatible with Atwood Hydro Flame Furnaces: 7912-II, 7916-II, 7920-II, 8012-II, FA 79D, HF 80D, DC82 25-32, DC82 35-41, FA 76D, FA 78 25-32, FA 72D, 8500-IV Series, 8500-III Series, 85-II Series, 85-I Series, 8900-I DC Series, 8900-II DC Series, 8900-III DC Series, AFSD12, AFSD16, AFSD20, AFMD20, AFMD25, AFMD30, AFMD35, DFMD20111, DFMD25111, DFMD30111, DFMD35111 DFSD12111, DFSD16111 and DFSD20111. Replacement for Atwood and Suburban Control Boards: 31501 Kit with 33488, 37875, 36716, 232613, 232614, 520820 Kit with 232613.