| SS |
Select Structural |
The highest grade, with the fewest defects. Knots are allowed if they are sound, firm, tight, and well spaced. |
Floor joists, Rafters, Headers, Small Beams, & Trusses |
| NO. 1 |
Construction |
Contains moderate number of tight knots. Paints well. |
Siding, Shelving, Paneling, Framing |
| NO. 2 |
Construction/Standard |
Contains larger and more numerous knots. Will accept paint fairly well. |
General Framing |
| NO. 3 |
Utility |
Contains splits and knotholes. Will not accept paint well. |
Sheathing, Subflooring, Framing |
| NO. 4 |
Economy |
Contains numerous splits, knotholes and similar defects, which large areas of waste wood. Will not paint well. |
Sheathing, Subflooring, Concrete Forms |
| NO. 5 |
Economy |
Contains the largest amount of waste areas and courser defects. |
Concrete Forms |
| STUD |
STUD |
Contains the qualities of No.3 but has a No.1 nailing face |
Framing |
| PS |
Pallet Stock |
No.4 & No.3 Lumber cut specifically to GMA 48x40 board and stringer sizing |
48x40 GMA Pallets |
