Actual Sizes of Yard Lumber

Lumber

Category

Expressed Size

Actual Size

Thickness

Width

Thickness

Width

Dimensional Lumber

2"

4"

1½"

3½"

2"

6"

1½"

5½"

2"

8"

1½"

7¼"

2"

10"

1½"

9¼"

2"

12"

1½"

11¼"

Board Lumber

1"

4"

¾"

3½"

1"

6"

¾"

5½"

1"

8"

¾"

7¼"

1"

10"

¾"

9¼"

1"

12"

¾"

11¼"

Timbers

4"

6"

3½"

5½"

4"

8"

3½"

7¼"

4"

10"

3½"

9¼"

6"

6"

5½"

5½"

6"

8"

5½"

7¼"

6"

10"

5½"

9¼"

8"

8"

7¼"

7¼"

8"

10"

7¼"

9¼"