The Grieve Corp.
No. 939 is a 2000°F gas-heated box furnace that can be used for preheating metals prior to forging. Workspace dimensions measure 72 in. wide ¥ 36 in. deep ¥ 48 in. high with 700,000 Btu installed in two modulating natural gas burners with a floor-mounted combustion air blower heating the unit. The furnace has 7-in. insulated walls made with 5 in. of 2300°F firebrick and 2.5 in. of 1900°F block insulation. A firebrick plate hearth is supported by firebrick piers. The unit has a manually operated vertical lift door. It also includes a digital indicating temperature controller, manual reset excess temperature controller with separate contactors and a fused disconnect switch. www.grievecorp.com
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