A power unit give you much more peak strength and also takes out a good portion of the sway. It consists of 3 pieces. the center piece and the 2 side pieces that fit into the legs. As you can tell, there is another piece of tubing welded into the center and bent pieces that make the units stronger. When going taller than 7 ft legs, this is a highly recommended option. This adds a lot to the overall integrity of a building. Power bars are available thru all companies except Coast to Coast, American Steele and TNT. They use a different bracing system.  CALL 405-381-4373
Click here to new site www.bestbuymetalproducts.com