21 CONDUIT BOXES, SWITCH DEVICE HOUSINGS, ENTRANCE FITTINGS, FIXTURE HANGERS, MOTOR CNTROL HOUSINGS, VAPOR-TIGHT HAZARDOUS LIGHTING, MISCELLANEOUS FLOOD LIGHTING, FLEXIBLE COUPLINGS, JUNCTION BOXES, PLUGS AND RECEPTACLES, EXPLOSION-PROOF SWITCHES, EXPLOSIONPROOF SWITCHES, EXPLOSIONPROOF CONTROL STATIONS, CONTROL CENTERS (SWITCHRACKS), ACCESSORIES-NAMELY, REDUCERS, CLOSE-UP PLUGS AND SEALING FITTINGS, UNIONS, COUPLINGS AND CONNECTORS, CAST OUTLET BOXES AND CORD AND CABLE CONNECTORS