Home Depot sells one column constructed of fiberglass. The 8-inch by 8-foot, 50-pound column sold by Home Depot is a Permacast column, which is a combination of fiberglass and fillers.
The PermaCast column is a round, primed, water resistant product manufactured by HB&G for exterior use. The column has a load bearing limit of 5,000 pounds. It comes in a smooth, white finish that can be painted. HB&G PermaCast fiberglass columns are insect proof, dent resistant and much stronger than similar composite materials that use more fillers and less fiberglass. HB&G claims their columns are easy to install and come with a one-year warranty.