Thermostat Assy., Water, 180ø, Gas Only, Years: 01/01/1953-12/31/1964

Used in models:2130, 4140, 4030, 4040, 4130, 1871, 1841, 1881, 1821, 1801, 1811, 2030, L778, 2110TR, 601, 681, 961, 650, 600, 850, 621, 4121, 981, 2120, 860, 701, 900, 700, 501, 4131, 630, 2131, 620, 2031, 800, 541, 671, 660, 741, 840, 4000-SERIES, 950, 2111, 960, 971, NAA, 771, 740, 640, 2000-SERIES, 611, 861, 951, 641, 820, 941, NAB, 4031, 851, 661, 631, 901, 651, 4120, 4110TR