aluminum angle 2x2 2 x 2 aluminum square tube 3/4 x 1 1/2 aluminum flat 2 x 3 aluminum angle aluminum angle 2x3 1/4 2 x 4 aluminum angle aluminum rectangular tube 1 1/2 x3 2 x 2 aluminum square bar 1/2 x 3 aluminum flat bar 1 x 2 x 1/8 aluminum angle