Each ALSC certified agency has its own registered grade-mark. The grade-mark must contain the first four items listed below; the fifth item is optional.

Grade-mark key: 1) Registered Trademark 2) Grade of Lumber 3) Moisture Content 4) Mill Identification Number 5) Heat Treated for Pest Pasteurization

Below are some examples of SPIB's common lumber grade-marks.

Dimension


Boards


Glued Lumber


Radius Edge Decking


Finish & Select