Labocon LMF-1300 Series Muffle Furnace has a robust structure with tight door sealing provided with spring mechanism that offers excellent insulation. It is designed for heavy duty operation. Its unique mechanical design ensures long life of the furnace. It provides minimum heat loss and optimized insulation. Chamber is heated by electric resistance heaters. The built-in fan system allows the abrasive gases come out of the furnace through a chimney.