plastic ground protection boards 2×8 ft for architecture STRUCTURAL 2 in x 8 in (Actual – Plastic Lumber Yard STRUCTURAL 2 in x 8 in (Actual Dimensions 1-1/2 in x 7-1/2 in) $ 132.34 – $ 400.59. : SG2X8 Categories: Plastic Lumber, Structural Grade. 2×8 red Ground protection mats export-HDPE road protection Products.