The Grieve CorporationNo. 854 is a high-temperature, electrically heated, 2200°F inert atmosphere floor furnace. Workspace dimensions measure 24 inches wide x 48 inches deep x 24 inches high. 53kW rod overbend design heaters installed in heavy-gauge, high-temperature Kanthal AF alloy wire provide maximum operating temperatures to 2200°F. The furnace features 9-inch-thich insulated walls consisting of 4.5-inch-thick 2600°F firebrick, 2.5-inch-thick 2300°F firebrick and 2-inch-thick block insulation. Special inert atmosphere construction on No. 854 includes a continuously welded outer shell, high-temperature door gasket, sealed heater terminal boxes, inert atmosphere inlet, outlet and flowmeter.