2X3 Lumber Size. Lumber is generally sized according to thickness, as in the case of rough sawn lumber, or in specific widths, thicknesses and/or the lumber is then sold as a 2x4 because the cost of the drying and machining are figured in.it is also much easier to refer to a board as a 2x4, rather than a 1.5x3.5. Dimension lumber can be purchased as dry or green. Here are the common sizes of lumber, and their actual sizes.
Residential lumber products from alliance lumber.
Dimensions at time of manufacture. The sizes presented are based on commercially available lumber within the usa, so the data shown is in imperial (inches) units. In a way, it has always disturbed me that the lumber industry can't come up with a simple format for measuring their product. Versatile & strong, suitable for lumber framing projects. Here are the common sizes of lumber, and their actual sizes. Lumber sizes chart for 1x2, 2x4. During the finishing phase (includes drying and planing the board) the 2x4 has been reduced to 1.5 x 3.5. The actual size is always a little bit smaller.