Atwood 33128 Hydro Flame Combustion Wheel FURNACE PART - Hydro Flame Combustion Wheel TRUSTED BRAND - One of hundreds of Atwood products for furnace solutions. DIMENSIONS - 13cm diameter. WEIGHT - 5oz. FITS MOST ATWOOD FURNACES - 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 16 20, 85-II 25, 85-II 31-35, 85-I 31-35, 89-I DC, 89-I AC, 89-II AC, 89-II DC, 89-III DC, 89-III AC, 1522 2-Stage, 2334 2-Stage, 2540 2-Stage, R-25