Fir (Abies Bracteata) is a softwood lumber species native to North America. There are over 40 species of fir trees, but only a few are commercially harvested for lumber. Fir lumber is known for its straight grain, light color, and relatively low density. It is also relatively easy to work with and finishes well.
The fine-grained, soft brittle pinkish red to brownish red heartwood is fragrant, very light and very durable, even in contact with soil.
ROUGH CUT LUMBER
Rough cut lumber comes straight from the mill through the dry kiln in the form of planks. This is a version of lumber that has been kiln dried with no further processing.
SURFACE 2 SIDES (S2S)
Surfaced Two Sides (S2S) is rough lumber that has been dressed on the top and bottom of the board in order to meet the requested thickness. Associated Hardwoods has state-of-the-art planers that dress the boards to meet the customer's exact specifications.
Rip-To-Width lumber is where both sides of the board are ripped to a customer's specified width after surfacing.
Rip-To-Width/Cut-To-Length is where the board is manufactured and defected to a customer's unique specifications.
Glued-To-Spec is where boards are ripped & cut and glued into a panels.
NHLA Grading Rules
The NHLA grades are based on the percentage of clear-defect free wood on a board. The measurements of this percentage are referred to as clear-cuttings.
Other than the FAS grades, the grade of the board is determined from the percentage of these clear cuttings and do not consider defects outside of the clear areas.
Learn more about NHLA Grading with this downloadable resource.