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INDUSTRIAL ELECTRICAL ENCLOSURES AND WEATHERPROOF ELECTRIC DISTRIBUTION AND LIGHTING EQUIPMENT, SPECIFICALLY, EMPTY ELECTRICAL ENCLOSURE BOXES AND CABINETS AND PANELS THEREFOR, EMPTY SHEET METAL BOXES AND CABINETS, EMPTY WIREWAY AND WIRE TROUGHS, WASHERS FOR ELECTRICAL BOX CONNECTIONS, LIGHT BULB HOLDERS, PORTABLE LIGHTING FIXTURES, AND WEATHERPROOF POWER OUTLETS CONSISTING OF PREWIRED ELECTRICAL RECEPTACLES MOUNTED IN WEATHERPROOF ENCLOSURES