Williams 9304 Vent Extension 323055-751 maintaining an efficient 80% AFUE

maintaining an efficient 80% AFUE rating for compatible Carrier

it should be sourced separately to ensure a proper thermal seal during the boiler rebuild

OEM Compatibility: Precision-engineered to fit Armstrong brand furnaces and air handlers without modification

reliable performance without the need for field adjustment

Williams 9304 Vent Extension 323055-751 maintaining an efficient 80% AFUEThe Williams 9304 Vent Extension is a critical component for completing through the wall installations of Direct Vent (DV) Wall Furnaces. This 15 inch extension is engineered specifically for the Williams 14038 Series (14,000 BTU models), including compatible Mfr. Nos. 1403821 and 1403822. When standard vent lengths are insufficient due to structural depth, this kit accommodates wall thicknesses from 9 inches up to 15 inches. Constructed from heavy