The entire wood industry uses what is known as nominal sizes. For anyone not in the lumber and construction industry, this can be confusing. Nominal sizes are simplified ways to reference not actual sizes. Simply instead of having to say “let me get three-quarters by three and one-half inch” you can simply say “one by four”. This is an industry-standard sizing. It also addresses the shrinkage and expansion of the boards that is caused by less or more humidity. Actual sizes can vary depending on where the wood is stored and installed due to the expansion and contraction of natural wood.
There were some lawsuits against Home Depot and Menards in 2017 that resulted in the Nominal size use being upheld as an industry standard. As a consumer, it is important to understand the difference.
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. So we list in every item in the actual size and the nominal size. If not otherwise indicated all sizes are in nominal.
Understanding Nominal vs Net Sizes
|Ipe Nominal Dimension Sizes||
Ipe Net Sizes (Actual Size**) – Eased Edge
|1 x 4 Ipe||.75″ x 3.5″ Ipe|
|1 x 6 Ipe||.75″ x 5.5″ Ipe|
|1 x 8 Ipe||.75″ x 7.25″ Ipe|
|5/4 x 4 Ipe||1″ x 3.5″ Ipe|
|5/4 x 6 Ipe||1″ x 5.5″ Ipe|
|5/4 x 8 Ipe||1″ x 7.25″” Ipe|
|2 x 2 Ipe||1.5″ x 1.5″ Ipe|
|2 x 4 Ipe||1.5″ x 3.5″ Ipe|
|2 x 6 Ipe||1.5″ x 5.5″ Ipe|
|2 x 8 Ipe||1.5″ x 7.25″ Ipe|
|2 x 10 Ipe||1.5″ x 9.5″ Ipe|
|2 x 12 Ipe||1.5″ x 11.25 Ipe|
|4 x 4 Ipe||3 ½” x 3.5″ Ipe|
*This page is meant to be a resource for sizing. For exact sizing of your order please refer to your specific order and if you have any questions make sure to ask prior to ordering.
**Moisture can add or reduce these actual measurements by as much as 5%.