Lumber Dimensions

Nominal Actual Actual - Metric 2 x 4 1-1/2 x 3-1/2 38 x 89 mm 2 x 6 1-1/2 x 5-1/2 38 x 140 mm 2 x 8 1-1/2 x 7-1/4 38 x 184 mm 2 x 10 1-1/2 x 9-1/4 38 x 235 mm
Also Know, why is lumber smaller than the size it says? Maybe youve noticed that lumber sizes are often misleading. The nominal cross-section dimensions of a piece of lumber, such as 2 X 4 or 1 X 6, are always somewhat larger than the actual, or dressed, dimensions. The reason is that dressed lumber has been surfaced or planed smooth on four sides (called S4S).

Thereof, what are the standard sizes of lumber?

In Canada and the United States, the standard lengths of lumber are 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24 feet (1.83, 2.44, 3.05, 3.66, 4.27, 4.88, 5.49, 6.10, 6.71 and 7.32 meters). For wall framing, stud or precut sizes are available, and are commonly used.

What is the actual size of a 1x4?

1x Board Sizes These boards lose 1/4 inch in thickness and 1/2 inch in width before leaving the mill. That means a 1 x 4 board is actually 3/4 inches by 3 1/2 inches.