Williams 9304 Vent Extension 320074-702 and C9MPV series furnaces

and C9MPV series furnaces

igniter sequencing

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

and Klixon models used in HVAC multi-stage heating

Williams 9304 Vent Extension 320074-702 and C9MPV series furnacesThe 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