Structural Lumber Information Structural Dimension Lumber For more information on specific species and grades of lumber contact the following organizations:  California Redwood Association  (CRA) 415-382-0662   Canadian Wood Council  (CWC) 613-747-5544   Northeastern Lumber Manufacturers Association  207-829-6901 Southern Forest Products Association (SFPA)  504-443-4464 Southern Pine Inspection Bureau (SPIB) 904-434-2611  West Coast Lumber Inspection Bureau (WCLIB) 503-639-0651 Western Wood Products Association (WWPA)  503-224-3930   Go here for Grading and Grade Stamp information...				Wood Products » Structural Composite Lumber and I-joists » Glued Laminated Timbers » Structural Panels » Metal Plate Connected Wood Trusses
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