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compatibility depends on the 32-degree pitch and 1/2" bore
a professional-grade solution for demanding industrial and residential applications
or electrical surges that bypass the ECM motor controller protection
40" WC fixed set point
check the first four digits of your serial number
Markel 56811001 Override Switch 323613-751 compatibility depends on the 32-degreeThe Markel 56811001 Override Switch is a critical field installed component engineered specifically for Markel 5100 Series unit heaters. Designed to provide precise manual oversight, this fan override switch allows contractors to bypass standard automated cycles for summer air circulation or to purge the heater casing of residual heat post shutdown. This replacement HVAC switch is built for the rigors of industrial environments, ensuring the fan motor