Model TL7-481818 heats to 2300°F (1260°C). Heavy-gauge, coil-wound, low watt density heating elements in six removable holders are controlled as three separate zones to provide uniform heating. The furnace chamber is insulated with 6.5” of multilayer insulation for energy-efficient operation and low outside shell temperature. The hinged doors are insulated with 5” pyro-bloc insulation. Controls include a Eurotherm Nanodac/Honeywell master/slave arrangement. In addition to the top-loading door, the furnace is designed with a side door to ease service access into the chamber.