Build taller, wider and stronger than ever before with Atlas Tube Jumbo HSS. Our newest sizes are the largest ever made in America. Ideal for industrial and manufacturing facilities, bridges, warehouses, multistory buildings and more, Jumbo HSS help architects and engineers achieve big things with tall columns, wide open floor space and long spans. Atlas Tube Jumbo HSS are available in squares up to 22″ x 1″ wall, rectangles up to 34″ x 10″ x 1″ wall, and rounds up to 28″ OD x 1″ wall.