Sizes of Western Red Cedar

WRCLA Cedar OutdoorGrades of Beams and Stringers and Posts and Timbers are available in a selection of widths and thicknesses showing the following table. Standard lengths are multiples of one foot, typically up to 20’. Longer length timbers are available on a special order basis.

Thickness and Width (inches) by Size Options
Nominal Full Sawn Standard Surfaced
4   3-3/4 3-9/16
5     4-1/2
6 6 5-3/4 5-1/2
8 8 7-3/4 7-1/2
10 10 9-3/4 9-1/2
12 12 11-3/4 11-1/2
Over 12 As nominal 1/4 off nominal 1/2 off nominal