

This pressured further compromise because thinner 2x4s were a way to compete in price with wood alternatives. While it doesn’t really shrink that much, the mills get more usable finished 2×4’s from a given tree if they cut them slightly smaller to begin with. The 2×4 refers to the rough-cut green wood: it shrinks during drying, then the dried wood is planed smooth, so the finished lumber is supposed to end up at 1.5″x3. The reason is that dressed lumber has been surfaced or planed smooth on four sides (called S4S). 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. Maybe you’ve noticed that lumber sizes are often misleading. Instead, a 2×4 is really only 1 1/2″ by 3 1/2″.
4x4 actual size full#
Because of this extra milling, a 2×4 no longer measures a full 2 inches by four inches. Now, most timber is milled and planed to give it a little more of a finished look, and a little more of a consistent size and profile. The nominal measurement is made before the lumber is surfaced. This was revised in 1926, 1928, 1939, and 1953, while still another revision is proposed for adoption in 1964. After World War I, the increasing demand for construction lumber led to the first national size standard in 1924. **Moisture can add or reduce these actual measurements by as much as 6%.Early concepts called for rough lumber to be of full nominal size, often in the dry condition. For the exact sizing of your order please refer to your specific order and if you have any questions make sure to ask prior to ordering. *This page is meant to be a resource for sizing. Please Note: We have full milling capabilities and can reduce any of these sizes to any specific needs your job may require. Seven and one-Quarter Inches by Seven and one-Quarter Inches Three and One-half inches by Eleven and One-Quarter Inchesįive and One-Quarter Inches by Five and One-Half Inchesįive and One-Quarter Inches by Seven and One-Quarter Inchesįive and One-Quarter Inches by Nine and One-Quarter Inchesįive and One-Quarter Inches by Eleven and One-Quarter Inches Three and One-half inches by Nine and One-Quarter Inches Three and One-half Inch by Seven and One-Quarter Inches Three and One-Half Inch by Five and One-Half Inches Three and One-half Inch by Three and One-Half Inches Two and One-half Inches by Seven and One-Quarter Inches Two and One-half Inches by Five and One-Half Inches One and One-half inches by Eleven and One Quarter Inches One and One-half Inches by Nine and One-Quarter Inches One and One-half Inches by Seven and One-Quarter Inches One and One-half Inches by Five and One-Half Inches One and One-half Inches by Three and One-Half Inches One and One-half Inches by One and One-half Inches One Inch by Eleven and One-Quarter Inches Three-Quarter Inch by Eleven and One Quarter Inches Three-Quarter Inch by Nine and One Quarter Inches Three-Quarter Inch by Seven and a Quarter Inches Three-Quarter Inch by Five and One-Half Inches

Three-Quarter Inch by Three and a Half Inches

We also have a master ipe price list available. Make sure if you have any questions to contact us prior to ordering.

Understanding Nominal vs Net Sizesīelow you see an actual list of nominal dimensions and actual sizes for our Ipe. If not otherwise indicated all sizes are nominal. So we list every item in the actual size and the nominal size. We have considered not using Nominal Dimensions, however, we decided it would be more confusing for professionals than it would be helpful for novice consumers. As a consumer, it is important to understand the difference. There were some lawsuits against Home Depot and Menards in 2017 that resulted in the Nominal size use being upheld as an industry standard. Actual sizes can vary depending on where the wood is stored and installed due to the expansion and contraction of natural wood. It also addresses the shrinkage and expansion of the boards that is caused by less or more humidity. Simply instead of having to say “let me get three-quarters by three and one-half inches” you can simply say “one by four”. Nominal sizes are simplified ways to reference not actual sizes. For anyone not in the lumber and construction industry, this can be confusing. The entire wood industry uses what is known as nominal sizes.
