it replaces legacy part numbers 85K43

It is not a universal substitute for PSC motors without a control board upgrade

Direct OEM Fit: Guaranteed compatibility with Williams Forsaire 3508

maintaining factory-spec combustion efficiency and thermal safety without the need for field modifications

4 scfm flow capacity at 1

Reznor 235953 Pressure Switch 340793-762 it replaces legacy part numbersThe Reznor 235953 Pressure Switch is a critical safety component designed for precise airflow monitoring in industrial and commercial heating units. Rated at a 2. 25 inch wc set point, this SPDT pressure switch ensures the combustion fan provides adequate drafting before allowing the gas valve to energize. Built with robust materials to withstand high cycle operations in demanding environments, the 235953 serves as an OEM replacement for diverse HVAC