Installation Versatility: Dual-powered design functions as a hardwired 24VAC thermostat or as a battery-operated unit for retrofit applications

Its adsorption charge is specifically tuned for fast reaction times at the sensing bulb

the cover features the correct slotted openings for standard McDonnell & Miller fasteners

While specifically designed for Watts backflow assemblies

Both utilize a 117V AC reset coil and SPDT switching

Williams 7B46 Motor Support 321042-401 Installation Versatility: Dual-powered design functionsThe Williams 7B46 Motor Support is a critical structural component engineered specifically for Williams Forsaire furnaces, including Counterflow Top Vent and Direct Vent models. Designed to work in pairswith two motor supports required per unitthis heavy duty furnace replacement part provides the necessary rigidity to maintain blower motor alignment. Precision alignment is essential to prevent premature bearing wear and ensures quiet, reliable airflow