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Optimized Airflow Control: Features adjustable blower-off delay settings to maximize heat exchanger efficiency and residential comfort
Contractor Grade Durability: Built to OEM specifications for long-cycle reliability in outdoor environments subjected to extreme temperature fluctuations
Operating at 460V single-phase power
and C9MPV series furnaces
Corrosion Resistance: High-grade aluminized steel construction protects against condensate-driven oxidation and premature failure
Williams 9304 Vent Extension 320074-702 Optimized Airflow Control: Features adjustableThe 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
