OEM Compatibility: Designed for seamless integration with Lennox AF90 series furnaces

Whether you are replacing a worn 4F type coil or performing a new installation

Built with a robust zinc body and Buna-N seals

What does the "Normally Open" function mean for my system

The HK50AL002 serves as a modern replacement for specific air handler and heat pump units

Williams 9307 Kit 323055-751 OEM Compatibility: Designed for seamlessThe Williams 9307 Thin Wall Collar Kit is an essential component for technicians installing Williams Direct Vent Wall Furnaces in structures with external wall thicknesses between 1 and 5 inches. This technical assembly adds 4 inches to the effective wall profile, ensuring the external vent cap achieves the required 1 1 4 inch engagement with the air inlet and flue tubes to maintain a sealed combustion system. Constructed from heavy duty galvanized