Lucifer Furnaces Inc., Warrington, Pa., released a brochure describing its 5000 Series electric production furnaces. The brochure includes normal air models (5000 models), atmosphere furnaces designed with alloy muffles (AM models), removable alloy muffles (RAM models), elevator quench (EQ models) and atmosphere furnaces constructed with a gas tight shell (GT models). The brochure describes general construction features, available options and detailed specification charts including chamber dimensions, overall sizes, power requirements and weights for each model.