Dometic 37021 - Limit Switch

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The limit switch is a very important safety device on a furnace. The function of a limit switch is to protect the furnace from overheating. These switches come in a variety of temp erature ratings and are located at critical locations above the heat chamber on the various models of furnaces. Therefore, it is very important that when one of these switches is replaced, you do so with the properly rated switch. Compatible with: 2540 2 Stage 7912-II, 7916-II, 7920-II, 8012-II, 8935-AC-II, 8935-AC-III, 8940-AC-II, 8940-AC-III, 8935-DC-II, 8935-DC-III, 8940-DC-II, 8940-DC-III SKU: 37021 UPC: 692931370217 Show more