Nat Pilot, Factory # 2s-2a, 1830-700 Series, Tube Size 1/4", Flame Pattern Standard, w/ Spark Igniter 24'' Wire Lead, 1/8 Push, 1/4 Short Nut & Sleeve, Nat LP Orifice A1098, M-138, # 261554 Nat Orifice A1099, M-139, # 261554