provided the regulator body is rated for the fuel type

Key Benefits for Professionals: Universal Compatibility: Fits high-volume Williams series such as the 1403821

ensuring a perfect physical and electrical match for specific Lennox models

Its robust construction ensures it handles the high startup torque common in PSC and ECM motors used in commercial Bard units

ensuring the safe and efficient discharge of combustion gases from the heat exchanger to the venting system

TB Woods 4J-3/4 Coupler Flange provided the regulator body isThe TB Woods 4J 3 4 Coupler Flange is a Type J Sure Flex Plus power transmission component engineered for heavy duty industrial and HVAC applications. Manufactured from high strength sintered carbon steel using a powdered metal process, this Size 4 flange provides exceptional dimensional accuracy and uniform material properties. It features a precision 3 4" bore with a standard 3 16" x 3 32" keyseat and a primary setscrew positioned over the keyway