Grey PVC trunking, moulded with snap-off side slot segments. Cables can enter trunking through the slots, or for larger cables, side slot fingers can be snapped off to create larger slots. Screw mounting holes are provided in the base, and the lid is a snap fit. External dimensions: 45.0mm x 44.0mm (w x h). Slot width 4.0mm. Supplied in 2 metre lengths. Price is per piece.