Porta-Dock stationary docks are made of high quality 6000 series aluminum, for maximum strength and durability. They come in 4' or 5' widths, and 6' or 8' lengths. They are available in flush or through-post design. Connector brackets make installation a breeze, and cross bracing provides added stability. There are four options for decking - white aluminum, beige aluminum, natural cedar wood, or Titan decking.