: Often sold in quarters of an inch. For example, 4/4 is 1" thick, and 8/4 is 2" thick.
Sawmills speak a specific language for sizing. Use these standards to avoid confusion: buying lumber from a sawmill
: State dimensions in the order of Thickness (inches) x Width (inches) x Length (feet) (e.g., a "1x6x8"). : Often sold in quarters of an inch