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  Dimensional Lumber

# 2 & Better Grade Dimensional Lumber



Size SPF#2 B.F. Price
2X4 16' .666 $7.99
2X6 16' 1.00 $11.25
2X8 16' 1.50 $14.25
2X10 16' 1.66 $21.50
2X12 16' 2.00 $27.50
Bender 12"x16   $13.50

Dimensional lumber is a term used for lumber that is finished/planed and cut to standardized width and depth specified in inches.

Common sizes are 24 (pictured, also two-by-four and other variants, such as four-by-two in the UK, Australia, New Zealand), 26, and 44. The length of a board is usually specified separately from the width and depth. It is thus possible to find 24s that are four, eight, or twelve feet in length.

Standard lengths of lumber are 6, 8, 10, 12, 14, 16, 18, 20, 22, and 24 feet.

A grade stamp is printed on lumber produced in North America, but what does it mean?

Since lumber comes from a natural source, much of it has naturally occurring defects, such as large knots or splits, and these can reduce its strength. Because of these and less obvious defects, lumber that leaves a sawmill must be appraised by trained inspectors and assigned a grading stamp.

"Select" = at least 80% clear wood Lumber grade stamp

"#1 Structural" = at least 75% clear wood; SPF (Spruce, Pine, Fir): Due to similar appearance and structural properties, these three softwood specie are commonly processed and sold under the grade stamp of "SPF." Because "SPF" lumber is readily available, light weight and easy to nail.

"#2 Structural" = at least 66% clear wood; # 2 & Better Grade: Lumber is graded according to the size and location of commonly found defects, such as knots and wane. The grain orientation within each board is also considered, to determine its structural integrity and strength capacity. Ultimately, an official grade is designated which is typically proportional to the amount of clear wood. The grade of "#2 & Better" is approximately 65% clear wood and is considered to be the preferred grade for construction purposes.

"#3 Structural" ("stud" grade) = at least 50% clear wood;
"Construction Grade" = at least 57% clear wood;
"Standard Grade" = at least 43% clear wood; and
"Utility Grade"
= at least 29% clear wood.


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