Douglas Fir Plywood Sanded/G1S Sanded fir or G1S (good 1 side) plywood is composed of 100% Douglas fir veneers bonded together with waterproof phenolic adhesive making it suitable for use in both interior and exterior applications where a sanded face is required for further finishing and a finer appearance. Good 1 side plywood is typically graded ACX (“A” FACE, “C …
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