The structural grade plastic lumber has the same attributes as described for the molded and landscape grades, with one major difference. We add chopped fiberglass to the polyethylene that makes the lumber approximately 4 times stiffer than the other grades. These boards are the choice when free spans beyond the capability of the other grades are required. It is most commonly used in under-structure in deck construction, though there are many other applications such as pergolas and arbors. This grade, because of the heavier fiberglass additive is also the heaviest grade on a size by size comparison with the other grades.
Small order fees apply under $400.00