2" x 4" Rectangular Steel Tube – 1/8" Wall (11 Gauge), 48" Length (4 ft), Mild Steel – Made in USA | This 2" x 4" rectangular mild steel tubing features a 1/8" wall thickness (11 gauge, approx. 0.120") and is cut to 48 inches (4 feet). The rectangular profile offers enhanced directional strength and is commonly selected for frames and structural supports. | Ideal for trailers, crossmembers, workbenches, handrails, supports, equipment racks, and general fabrication projects. | Supplied as raw, unfinished steel with mill finish and possible light surface oil or scale. Surface preparation may be required before painting or coating. Not galvanized or coated.