Minimum dimensions of the pieces. | Clear cuttings | Yield | Sound sapwood | Heart | Wane | Shakes | Knots and holes | Deformations | |
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FAS - First And Second | Width of 6 " and wider - length of 8 ' and longer | 4 " x 5 ' or 3 " x 7 ' | 83 1/3 % (10/12ths) to 100% clear-wood cuttings over the entire surface of the board | Tolerated without limits | Tolerated outside cross cut if the length in inches is smaller than the surface measured. | Must not exceed 1/2 of the width of the piece on each edge. Tolerated if the size does not exceed 1/2 of the surface measured | The cumulated length must be smaller than 2 times the surface measured. Not considered if not exceeding 1 inch on each extremity. | The diameter of each knot or hole must be < 1/3 of the surface measured | Tolerated if made straight again during process |
FAS One Face - F1F | The better face must meet all FAS requirements while the poor face must meet all the requirements of the Number 1 Common grade | ||||||||
SELECTS | Width of 4 " and larger - length of 6 ' and longer | This grade is virtually the same as F1F except for the minimum board size required | |||||||
No 1 COMMON | Width of 3 " and larger - length of 4 ' and longer | 4 " x 2 ' or 3 " x 3 ' | from 66 2/3 % ( 8/12ths) up to 83 1/3 % | Tolerated without limits | < 1/2 of the length | Without limits | Without limits |   |   |
No 2 COMMON | Width of 3 " and larger - length of 4 ' and longer | 3 " x 2 ' | from 50% ( 6/12ths) up to 66 2/3 %. | Without limits | Without limits | Without limits | Without limits |   |   |