Fiberglass Columns
Fiberglass Pergola Kits are built with components that are strong, lightweight, and that provide a higher level of aesthetic quality than vinyl or wood pergolas. They are manufactured with Spartan Tails and square or no taper round pultruded fiberglass columns without neck moulding.
Follow the link here for more information on installation instructions and the product itself: http://www.hbgcolumns.com/pergola-systems/fiberglass.