The Tubesca 4255012 2x12 Fibreglass Industrial Double Sided Step Ladder is manufacture from box section polyester reinforced fibreglass using a process combining pultrusion and filament winding, providing additional strength with minimal weight giving the best mechanical performance as well as electric insulation properties. The fibreglass uprights protect the user from low and medium voltage current, flashover between two treads 30,000 volts, laboratory tested. Other features include extra large, slip-resistant feet, slip-resistant treads & bucket hook. The top tread height of this ladder is 2.87m. Suitable for professional use.