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Quick Links: Lumber - Glossary of Terms






Terminology
Minimum National Grade Rules

FAS

Hardwood's best grade yields about 85-90% clear cuttings. Most boards are 6" and wider, 8' and longer. (Exception: Walnut is 5" and wider, 6' and longer.)

Rough FAS lumber is graded from the board's poorer side

FAS 1 FACE & BETTER

Subject to the same grading rule as FAS except that the board is graded from the better side and back side must grade at least No. 1 Common.

SELECTS & BETTER

Similar to FAS 1 Face & Better except that the minimum allowable board size is 4" and wider, 6' and longer. Backside may grade No. 1 Common or Sound.

SELECTS

4" and wider, 6' and longer. Better side grades FAS, reverse side grades No. 1 Common. Short and narrow boards are usually clear.

CLEAR 1 FACE SHORTS

4" and wider, 4'-7' long. For short clear cuttings - such as face frames and furniture parts.

NO. 1 COMMON "THRIFT GRADE"

3" and wider, 4' and longer. Yields over two-thirds clear cuttings. This economical grade contains less sap than the clearer grades. Stock is generally long with average widths. Walnut is an exception.

PRIME IMPORT QUALITY

Those woods which cannot be graded by NHLA rules carry the description Prime Import Quality. This term tells you that the wood is the best available in the world market.
Western Pine Grade Rules

Select Grades

C & BETTER SELECT


A combination of the two highest recognized grades, allowing only minor imperfections.

D SELECT

Good practical grade, admitting only sound defects which cover smoothly with paint.

MOULDING STOCK

A special grade offered by a few mills, yielding more than 66 2/3% rippings 1" and wider, 10' and longer. Suitable for mouldings.


STANDARD SURFACED THICKNESS
LUMBER HARDWOODS
Rough Thickness Most Softwoods
4/4 S2S to 25/32"
5/4 S2S to 1 1/16"
6/4 S2S to 1 5/16"
8/4 S2S to 1/3/4"
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