Williams 9301 Extension 321042-401 Enhanced Media Density: Engineered to

Enhanced Media Density: Engineered to capture airborne contaminants without creating excessive pressure drops across the blower

Designed to handle the rigorous duty cycles of outdoor HVAC environments

ensuring the fan operates correctly during both heating and cooling calls

If you notice persistent leakage around the stem that cannot be stopped by tightening

Because these filters are not washable

Williams 9301 Extension 321042-401 Enhanced Media Density: Engineered toThe Williams 9301 Extension is a professional grade 15 inch vent extension engineered specifically for Williams Direct Vent Furnaces. This sidewall venting component is essential when installing 22,000 BTU and 30,000 BTU modelsincluding the 22038 and 30038 seriesin locations where standard wall thickness is exceeded. Constructed from high durability galvanized steel, the 9301 kit accommodates wall thicknesses ranging from 9 to 15 inches, ensuring a