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The Allied Air R20001103 is a limit control (safety limit switch) for furnace applications and corresponds to manufacturer item number 87H91. It monitors temperature and opens or closes electrical circuits when a preset temperature is reached to protect the heat system. This OEM replacement part is listed for use on Ducane furnaces and is identified as a furnace limit control used in heating equipment.
Furnace safety limit control; OEM replacement (87H91); used to monitor and protect furnaces
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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