Atwood 31501 Ignition Board Retrofit Kit With Fan Control Universal DSI Furnace Board Camper This works with Model #s: 7912-II, 7900-II 16 20, 8012-II, FA 79D, HF 80D, DC82 25-32, DC82 35-41, FA 76D, FA 78 25-32, FA 72D Also works with Model #s: 85-IV 16, 85-IV 20, 85-IV 25, 85-IV 31, 85-IV 35, 85-III 16-20, 85-III 25, 85-III 31-35, 85-II 25, 85-II 31-35, 85-I 16-20, 85-I 25, 85-I 31-35, 89-I DC, 89-II DC, 89-III DC SAME DAY SHIPPING ON ALL ORDERS PLACED BEFORE 2 P.M. EST. Next day air shipping for Saturday delivery note to all buyers: All orders placed on Fridays will arrive the following Monday/Tuesday depending on location or holiday schedule. does not provide that shipping option. Thank you for your business 24/7 Parts