Structural Columns 8" Straight, 8" & 10" Tapered, 8" Fluted, 8" Square x 9' white ivory clay 8" Tapered or Straight Round Column (7 3/4" tapers to 6 1/8") 8" Square x 9' 10" Tapered Round Column (9 3/4" tapers to 8 1/8") Available in white (ivory and clay in 120" long only). Plain structural round 108" and 120" long columns featured a unique plate system with hardware included. Fluted posts available in custom lengths up to 120". Posts do not have seam lines. Structural post load: Maximum 18,000 lbs. Uplift approx. 1,600 lbs. maximum Round Column Aluminum Top & Bottom Round Column Plates Top & Bottom Round Column Trim Square Column Aluminum Top & Bottom Square Column Plates Square Column Trim Set sold separately