High temperature furnaces such as draw, box, vacuum, dryer, glass lehrs and forced air ovens utilize plug heaters constructed with open coils. Engineered for industrial furnaces, NEI builds these heaters in Michigan with hard-working performance in mind. National Element Inc. carries a variety of standard sizes in both vertical drop-in and horizontally mounted units, as well as sizes to fit all units. All rack assemblies manufactured with stainless steel and include a steel top plate and terminal cover box. ENGINEERING SPECS Temperatures to 1450F (788C)Variances from 15kw to 500kw for use with any voltageVertical drop-in or horizontal mounted units304 , 309 stainless steel rack assembly for low temperature drying330 stainless steel rack assembly for high temperature draw furnacesSteel top plate and terminal cover box included in assembly