Channellock Heavy Duty Metal Shelving has an industrial welded steel frame and beams. Assembly is simple - no tools required unless securing the unit to a wall or floor. Each wire shelf is capable of supporting 1500 Lb. of evenly distributed weight. Welded plates at base of each upright allows fixture to be anchored to the floor. Powder-coated frame, beams and deck grids provide improved durability. Shelves are adjustable in 3 In. increments.