Marshall Stamping Extend-O-Column Series AC390 Round Column, 9 ft to 9 ft 4 in

3 in OD 11 ge (0.120 in wall). 4 in adjustment. Cold rolled steel screw. Turning bar provided with each post. Flow-coated inside and out with red corrosion-resistant paint. Heavy-duty cap and base plates slotted. Holes to fit steel or wood beams. Embossed lugs grip posts firmly to avoid slipping. All parts are welded or wired together.