B. Softwood Lumber.
(1) Softwood lumber applies to softwood boards, timbers, and dimension lumber that have been dressed on four sides, but may not apply to rough lumber, to lumber that has been matched, patterned, or shiplapped, or to lumber remanufactured or joined so as to have changed the form or identity, such as individual, assembled, or packaged millwork items.
(2) Definitions.
(a) "Boards" means lumber 1-1/4 inches or less in actual thickness and 1-1/2 or more inches in actual width. Boards less than 5-1/2 inches in actual width may be classified as strips.
(b) "Dimension lumber" means lumber from 1-1/2 inches to, but not exceeding, 4-1/2 inches in actual thickness, and 1-1/2 or more inches in actual width. Dimension lumber may be classified as framing, joists, planks, rafters, studs, small timbers, etc.
(c) "Dressed (surfaced) lumber" means lumber that has been dressed (or surfaced) for the purpose of attaining smoothness of surface and uniformity of size.
(d) "Grade" means the commercial designation assigned to lumber meeting specifications established by a nationally recognized grade rule writing organization.
(e) "Matched lumber" means lumber that has been worked with a tongue on one edge of each piece and a groove on the opposite edge to provide a close tongue-and-groove joint by fitting two pieces together. When end-matched, the tongue and groove are worked in the ends also.
(f) "Minimum dressed sizes (width and thickness)" means the standardized width and thickness at which lumber is dressed when manufactured in accordance with Table 1.
(g) "Patterned lumber" means lumber that is shaped to a pattern or to a molded form, in addition to being dressed, matched, or shiplapped, or any combination of these workings.
(h) "Representation" means any advertisement, offering, invoice, or the like that pertains to the sale of lumber.
(i) "Rough lumber" means lumber that has not been dressed but which has been sawed, edged, and trimmed at least to the extent of showing saw marks in the wood on the four longitudinal surfaces of each piece for its overall length.
(j) "Shiplapped lumber" means lumber that has been worked or rabbeted on both edges of each piece to provide a close-lapped joint by fitting two pieces together.
(k) "Softwood lumber," for the purpose of this regulation, means lumber produced from the cedar, fir, hemlock, juniper, larch, pine, redwood, spruce, tamarack, and yew species groups of trees.
(l) "Species" means the commercial name assigned to a species of trees.
(m) "Species group" shall be the commercial name assigned to two or more individual species having similar characteristics.
(n) "Timbers" means lumber 4-1/2 or more inches in least actual dimension. Timber may be classified as beams, stringers, posts, caps, sills, girders, purlins, etc.
(3) Identity. Representations shall include a declaration of identity that specifies the grade or grades, species or species group, and whether the lumber is unseasoned (green) or dry.
(4) Quantity. Representations shall be in terms of the number of pieces, the minimum dressed width and thickness, the length of individual pieces or the lineal footage, except that:
(a) The use of nominal dimensions shall be allowed when used in conjunction with the required minimum dressed sizes and actual length;
(b) With respect to all invoices, a table of minimum dressed sizes may appear on the reverse side of the invoice, so long as appropriate reference to the table is prominently and conspicuously shown on the face of the invoice.
Table 1 Softwood Lumber Sizes
Minimum standard dressed sizes at the time of manufacture for both unseasoned (green) and dry lumber.
ProductClassification(Nominal Size) |
Minimum Dressed Sizes(See Note 2) |
Unseasoned |
Dry |
Inches |
Inches |
Inches |
Dimension Lumber |
2 x4 |
1-9/16 x3-9/16 |
1-1/2 x3-1/2 |
2 x6 |
1-9/16 x5-5/8 |
1-1/2 x5-1/2 |
2 x8 |
1-9/16 x7-1/2 |
1-1/2 x7-1/4 |
2 x 10 |
1-9/16 x9-1/2 |
1-1/2 x9-1/4 |
2 x 12 |
1-9/16 x 11-1/2 |
1-1/2 x 11-1/4 |
(See Agency note 1) |
Board Lumber |
1 x4 |
25/32 x3-9/16 |
3/4 x3-1/2 |
1 x6 |
25/32 x5-5/8 |
3/4 x5-1/2 |
1 x8 |
25/32 x7-1/2 |
3/4 x7-1/4 |
1 x 10 |
25/32 x9-1/2 |
3/4 x9-1/4 |
1 x 12 |
25/32 x 11-1/2 |
3/4 x 11-1/4 |
Agency note 1. The dry thicknesses of nominal 3 inch and 4 inch lumber are 2-1/2 inches and 3-1/2 inches. Unseasoned thicknesses are 2-9/16 inches and 3-9/16 inches. Widths for these thicknesses are the same as shown above.
Agency note 2. Dry lumber is defined as being 19 percent or less in moisture content and unseasoned lumber as being over 19 percent moisture content.