inert atmosphere chamber furnace are front / top loading with 3 sides / 4 sides and bottom heated with hinged / vertical counter weight door opening arrangement. These are manually operated batch type models with separate control panel. features * sturdy construction* uniform temperature* precise control* effective insulation* firm sealing* smooth door operation* separate control panel applications * hardening* annealing * stress relieving* normalizing * pack carburizing* gas carburizing * gas nitriding* gas carbonitriding * bright hardening