Williams 9303 Extension 326070-701 Featuring a 1-1/8" ODF solder

Featuring a 1-1/8" ODF solder connection and a full 1-1/8" port size

When integrating this bracket into an HVAC retrofit

Energy Efficiency: Enables the control board to make micro-adjustments to fan speed and staging

Key Benefits: Balance Ported Design: Compensates for fluctuating head pressures to provide precise superheat control even at low load conditions

you must replace the existing 3/8" nut for 1/4" tubing with the included 7/16" nut to ensure a leak-proof seal

Williams 9303 Extension 326070-701 Featuring a 1-1/8" ODF solderThe Williams 9303 Extension is a professional grade 24 inch vent extension kit engineered specifically for direct vent gravity wall furnaces. This heavy duty galvanized steel vent extension is the standard solution for HVAC installers dealing with deep wall penetrations where standard venting falls short. It is designed for use with wall thicknesses ranging from 15 inches to 24 inches, ensuring a secure and code compliant flue path from the furnace to