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Standard Thickness for Surfaced Lumber

Nominal
Thickness

S2S Thickness

3/8

3/16

1/2

5/16

5/8

7/16

3/4

9/16

1

13/16

1 1/4

1 1/16

1 1/2

15/16

1 3/4

1 1/2

2

1 3/4

2 1/2

2 1/4

3

2 3/4

3 1/2

3 1/4

4

3 3/4