Arbors Directâ„¢ has recently introduced a line of standard stock pergolas that are available in 12'x12', 14'x14', and 16'x16' overhead dimensions with a white finish. They are available with round or square columns. Pergolas include all hardware needed for assembly and install in a few hours. They are wind load rated at both 90MPH and 160 MPH (with our wind load/ deck plates) and come with a Limited Lifetime Warranty.rnrnStructural Fiberglass is:rnLow Maintenance, Insect proof, will not rot, Withstands freeze/thaw cycles, lightweight with easy handling and installation, heat distortion resistant, and a natural conduit for wiring