Portable withback (5 understructures), Save money and time with these portable benches that ship UPS and not Truck. Available for 15'L aluminum portable benches with and without backs. They are lightweight and maintenance free. All aluminum planks are furnished with smooth 10"W finished with end caps. Framework is constructed of heavy duty 1-5/8"OD galvanized steel. Picture shown powder coated. Benches come galvanized not painted. Powder coating available but extra charge. See powder coated upcharge.