Fittings for Electrical Conduit Installations-Namely, Wiring and Outlet Boxes, Switch Plug and Receptacle Housings, and Wiring Devices Therefor, Hangers, Expansion Joints Pedestals, Service and Grounding Equipment, Connectors, Couplings and Unions, Cord Clamps, Pipe Plugs, Reducers, Stuffing Boxes, T's, Seals, Drains, Breathers, and Vents; Industrial and Non-Industrial Lighting Fixtures and Portable Lamps and Fixture Hangers; Electrical Connectors-Namely, Plugs and Receptacles; Circuit Breakers, Control Stations and Pilot Lights, Panel Boards, Telephones, Industrial Control Alarm and Signal Device and Instruments; Lighting Equipment-Namely, Flood Lights, Searchlights and Accessories Therefor for Both Hazardous and Non-Hazardous Locations; Traffic Signal Equipment-Namely, Signals, Beacons and Flashers, Control, and Poles, Pedestals, Cabinets and Accessories Therefor; Airport Equipment-Namely, Beacons, Marker Lights, Obstacle Lights, Control Desk and Panels, Flood Lights, Weather Equipment, and Accessories Therefor