https://www.competitivemetals.com/1-12in-x-4in-x-14ga-083in-mild-steel-rectangle-tube-length-60in-p-501.html
1-1/2in x 4in x 14ga (.083in) Mild Steel Rectangle Tube - Length 60in | Competitive Metals
1-1/2in x 4in x 14ga (.083in) Mild Steel Rectangle Tube - Length 60in