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Understanding Lumber Sizes |
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Surfaced lumber actually isn't the same as its nominal size. In other words, a two-by-six is not 2 inches thick and 6 inches wide. After it has been dried and surfaced, it is actually 1 1⁄2 inches by 5 1⁄2 inches. The equivalents to nominal sizes are given in the chart. Lumber is stocked by most dealers in lengths that range from 6 to 20 feet, normally in even increments. | Lumber Sizing | | | Nominal Size
1x2
1x3
1x4
1x6
1x8
1x10
1x12
2x2
2x3
2x4 | Surfaced Size (in.)
3/4 x 1 1/2
3/4 x 2 1/2
3/4 x 3 1/2
3/4 x 5 1/2
3/4 x 7 1/4
3/4 x 9 1/4
3/4 x 11 1/4
1 1/2 x 1 1/2
1 1/2 x 2 1/2
1 1/2 x 3 1/2 | | | Nominal Size
2x6
2x8
2x10
2x12
4x4
4x6
4x8
4x10
4x12 | Surfaced Size (in.)
1 1/2 x 5 1/2
1 1/2 x 7 1/4
1 1/2 x 9 1/4
1 1/2 x 11 1/4
3 1/2 x 3 1/2
3 1/2 x 5 1/2
3 1/2 x 7 1/4
3 1/2 x 9 1/4
3 1/2 x 11 1/4 | |
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Got a question about Understanding Lumber Sizes? Ask or search the HomeTips Forums
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