Industrial Grade Rectangular Ventilation Channel Cable Tray Fireproof Corrosion Resistant Spray Aluminium Alloy Construction Product Name Aluminum Alloy Powder-coated Partitioned Trough-type Cable Tray Materials Aluminum , Aluminium Alloy Specification Thickness: 1.0 mm - 3.0 mm Height: 25 mm - 500 mm (Light, Medium, Heavy Duty) Width: 100 mm - 1200 mm Length: 2-6M (can be produced according to appointed length) Finished: power coating Surface Finish Powder coating, custom