With a 1/8" NPT thread and a 7/16" hex head

Direct OEM Compatibility: Engineered specifically for York

Key Benefits: Precision Metering: The #46 drill size ensures the exact natural gas delivery required for compatible Weil McLain boiler models

A higher voltage rating provides a larger safety margin against voltage spikes

Lennox 97H76 Damper Door Spring With a 1/8" NPT threadThe Lennox 97H76 Damper Door Spring is a critical mechanical component designed to provide precise tension and return force for damper assembly operations within commercial and residential HVAC systems. Functioning as the primary HVAC damper actuator spring, this part ensures that air mixing dampers and economizer doors return to their default positions upon system cycling or power loss. Engineered for durability in high cycle environments, the 97H76