Green Trough: Available in 6 sizes, Green Trough is a versatile and lightweight cable protection trough manufactured by Furukawa from 100% recycled polymer. Available in lengths of 1000mm & 500mm Furukawa Green Trough is a lightweight, durable and environmentally friendly trough with an unparalleled range of accessories to satisfy a variety of cable installation requirements. Green Trough is suitable for a wide array of civil infrastructure projects including rail, motorways, bridges, tunnels, water treatment plants, nuclear power and renewable energy.