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| Southern Pine Grade Descriptions |
Based on 2002 SPIB Grading Rules
- Dimension Lumber: 2" to 4" thick, 2" and wider
- Prime Dimension: 2" to 4" thick, 2" to 12" wide
- Timbers: 5" x 5" and larger
- Mechanically Graded Lumber - Machine Stress Rated (MSR) Lumber: 2" and less in thickness, 2" and wider
- Mechanically Graded Lumber - Machine Evaluated Lumber (MEL): 2" and less in thickness, 2" and wider
- Glued Lumber: 4" and less in thickness, widths vary by product
- Scaffold Plank: 2" and 3" thick, 8" and wider
- Stadium Grade: 2" thick, 4" to 12" wide
- Seawall Grades: 2" to 4" thick, 6" to 14" wide
- Marine Grades: 1" to 20" thick, 2" to 20" wide
- Decking, Heavy Roofing and Heavy Shiplap: 2" to 4" thick, 2" and wider
- Boards: 1" to 1-1/2" thick, 2" and wider
- Industrial Lumber: 2" and thicker, 2" and wider
- Structural Lumber: 2" and thicker, 2" and wider
- Radius Edge Decking: 1-1/4" thick, 4" to 6" wide
- Finish: 3/8" to 4" thick, 2" and wider
- Flooring, Drop Siding, Paneling, Ceiling and Partition, OG Batts, Bevel Siding, Miscellaneous Millwork
- Shop and Moulding
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