this file is not mine. credits to the owner

1. STANDARD LUMBER SIZES
Standard Lumber Sizes
Nominal Size
Actual Size
1x2
¾” x 1 ½”
1x4
¾” x 3 ½”
1x6
¾” x 5 ½”
1x8
¾” x 7 ¼”
1 x 10
¾” x 9 ¼”
1 x 12
¾” x 11 ¼”
2x2
1 ½” x 1 ½”
2x4
1 ½” x 3 ½”
2x6
1 ½” x 5 ½”
2x8
1 ½” x 7 ¼”
2 x 10
1 ½” x 9 ¼”
2 x 12
1 ½” x 11 ¼”
4x4
3 ½” x 3 ½”
4x6
3 ½” x 5 ½”
6 x 6*
5 ½” x 5 ½”
Board lumber is specified by the
nominal (in name only) size.
Example:
1x6 1x8 2x4 2x6 2x8
Nomimal sizes are larger than actual
sizes.
Nominal size 2 x 4, actual size, 1 ½ x 3 ½”
**Always layout for the actual dimension of
the lumber!
Standard sizes of lumber are always
shown thickness before width.
This product was funded by a grant awarded under the President’s High Growth Job Training Initiative as implemented by the U.S. Department
of Labor’s Employment & Training Administration. The information contained in this product was created by a grantee organization and does
not necessarily reflect the official position of the U.S. Department of Labor. All references to non-governmental companies or organizations,
their services, products, or resources are offered for informational purposes and should not be construed as an endorsement by the Department
of Labor. This product is copyrighted by the institution that created it and is intended for individual organizational, non-commercial use only.
www.CHICAGOWOMENINTRADES.org