Williams Furnace 9A336 High Altitude Conversion Kit for 5009821 and 5009621A h15.8 12-1/2 lb Tub or 25

12-1/2 lb Tub or 25 lb Tub

ensuring long-lasting durability

Designed for use with Mega-Flames Giant Timbers vent-free gas logs

Does not require (but is stronger with) heat curing

Williams Furnace 9A336 High Altitude Conversion Kit for 5009821 and 5009621A h15.8 12-1/2 lb Tub or 25Overview 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