Williams Furnace 9A335 High Altitude Conversion Kit for 3509821 and 3509621A h4.63 California PROP 65: This product

California PROP 65: This product can expose you to Lead & Chromium

Clearances 18” clearance to combustibles Flue Material 6" - 8"/

providing you with the choice of a gorgeous fire nearly anywhere

when installed according to manufacturer’s instructions

Used to support the biomass chimney as it passes through the firestop spacer or roof support

Williams Furnace 9A335 High Altitude Conversion Kit for 3509821 and 3509621A h4.63 California PROP 65: This productOverview Williams Comfort Products Made In America Since 1916! For over 100 years, Williams has designed and manufactured quality heating, ventilation, and air conditioning products for both the home and business. It all started in 1916, when Jesse Williams began building gas steam radiators in Los Angeles under the banner Williams Radiator Company. Williams commitment to quality was clear from the start, and the companys product line expanded over