12 x 25 (1/2" x 1")19 x 38 (3/4" x 1-1/2")25 x 50 (1" x 2")38 x 65 (1-1/2" x 2-1/2")38 x 75 (1-1/2" x 3")50 x 75 (2" x 3")50 x 100 (2" x 4")50 x 125 (2" x 5")50 x 150 (2" x 6")75 x 100 (3" x 4")75 x 125 (3" x 5")75 x 150 (3" x 6")100 x 150 (4" x 6")100 x 200 (4" x 8")
Rectangular Hollow Sections are very popular in many mechanical and construction steel applications. Their flat surfaces make them prime for use in joining and metal fabrication.