Protects electrical wiring in applications where dust, dirt, oil and water are not serious problems. All sections and fittings are completely open on one side so wires and cables can be laid in along wireway run. No pulling through of wires or cables prevents damage to insulation that often occurs in a pull-through wiring system. Flat cover design allows for mounting flush with walls or ceilings. Keyhole screw slots on flat covers provide easy access.