4" uPVC Electrical Duct with 3.2 mm wall thickness, 5.8 meter standard length, Solvent Weld socket type. Available colors: Red/Grey/Black. Dimensional Specifications: uPVC Electrical Ducts- BS EN 1329-1 & 1401-1. Applications/characteristics include Electrical Ducting Below The Ground, Road Crossing Ducting, Used for High and Low Electrical Insulation, High Impact Resistance, Corrosion Resistance, Low Thermal Expansion, Non Conductor.