Williams 9304 Vent Extension 320074-702 providing sufficient length for standard

providing sufficient length for standard blower wheel hubs

Corrosion Resistance: High-grade aluminized steel construction protects against condensate-driven oxidation and premature failure

Contractor Grade Durability: Built to OEM specifications for long-cycle reliability in outdoor environments subjected to extreme temperature fluctuations

Combustion Precision: Includes factory-calibrated LP conversion orifices to maintain proper air-to-fuel ratios

Williams 9304 Vent Extension 320074-702 providing sufficient length for standardThe 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