Williams Furnace High Altitude Conversion Kit with all Required Orifices for 3501521A/3501921A/3502521A/3502921A 43in Two-year limited warranty

Two-year limited warranty

Like an old-world hearth

18" Millivolt Control Vent Free Burner

Crumpled newspaper won’t start a fire in the rain

3626 Door Style CV1: Twin full swing trackless

Williams Furnace High Altitude Conversion Kit with all Required Orifices for 3501521A/3501921A/3502521A/3502921A 43in Two-year limited warrantyOverview 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