[ Type - 444-18 ] [ Bi-metal Hi-limit W/o Stem ]; [ Temp 550 Fixed ]; wells; warmer Series: Mod-100/500, Ss- & Where Applicable; mod-100d, Mod-200, Mod-200d, Mod-200dm, Mod-300, Mod-300d,; mod-300dm, Mod-400, Mod-500dm, Ss-10, Ss-10d, Ss-206,; ss-206d, Ss-20

[ type - 444-18 ] [ bi-metal hi-limit w/o stem ] [ temp 550 fixed ] wells warmer series: mod-100/500, ss- & where applicable mod-100d, mod-200, mod-200d, mod-200dm, mod-300, mod-300d, mod-300dm, mod-400, mod-500dm, ss-10, ss-10d, ss-206, ss-206d, ss-206e, ss-206ed, ss-206er, ss-206erd, ss-4, ss-4d, ss-8, ss-8d, sw-10 need screws # 26-2345 10-32 x 1/4" for operating t'stat use: g388, e-256, # 46-1154 and black & silver knob w/white indicator line # 22-1522

Replaces Part Number STAR MFG: 2T-30374, 2T30374, 50374, WS-50374

Replaces Part Number STERO: WEL2T-30374, WEL2T30374