Williams Furnace High Altitude Conversion Kit with all Required Orifices for 6005621A sqft1970 select your heat output and

select your heat output and enjoy the warmth

near entrances

Includes brass gas valve body and shut off-key

Please note that these units need to be purchased as gas-specific from the factory

Cold Air Collar Kit - 8" Chimney

Williams Furnace High Altitude Conversion Kit with all Required Orifices for 6005621A sqft1970 select your heat output andOverview 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