7' 9" To 8' 1", 11 Gauge, M Plate, 3" Adjustable Column, 3.0" O.D., Swivel Plate On Screwed End, H Plate On Tube End, Completely Assembled, No Loose Parts, Wood Or Steel Beam Mount, Finished With Corrosion Resistant Powder Coating That Exceeds ASTM-B117-85, 2006 ICC & IRC Approved, Max Ext Load 11,810 LBS.