What sizes does rectangular tubing come in?

Rectangle Structural Steel Tubing

1 x 0.5 x 0.049 Rectangular Mechanical Tubing.
1 x 0.5 x 0.065 Rectangular Mechanical Tubing.
1 x 0.75 x 0.065 Rectangular Mechanical Tubing.
1 x 0.75 x 0.095 Rectangular Structural Tubing.
1.5 x 0.5 x 0.065 Rectangular Mechanical Tubing.
1.5 x 0.75 x 0.065 Rectangular Mechanical Tubing.

What sizes does steel square tubing come in?

Square Structural Tubing

0.5 x 0.5 x 0.035 Square Mechanical Tubing.
0.5 x 0.5 x 0.049 Square Mechanical Tubing.
0.5 x 0.5 x 0.065 Square Mechanical Tubing.
0.625 x 0.625 x 0.049 Square Mechanical Tubing.
0.625 x 0.625 x 0.065 Square Mechanical Tubing.
0.75 x 0.75 x 0.035 Square Mechanical Tubing.

What are the sizes of square tubing?

Square steel tubing is available in cross-sectional dimensions ranging from ½ inches per side to 24 inches per side, available in several thicknesses and several lengths.

How is box tubing sized?

The Steel Tube Institute of North America specifies the measurement of square tubing by its outside width. For example, a tube with 2-inch wide sides calls out as 2 by 2 inches. Sizes range from 1-1/4 by 1-1/4 inch to 32 by 32 inch. From 1-1/4 inches to 2-1/2 inches, the sizing varies by a quarter-inch.