Publish Time: 2025-03-29 Origin: Site
| A | Smooth,paintable.Not more than 18 neatly made repairs,boat,sled or router type,and parallel fo grain,permitted.Wood or synthetic repairs permitted.Maybe used for natural finishin less demanding applications | |
| B | Solid surface.Shims,sled or router repairs,Band tight knots to 1 inch across grains permitted.Wood or synthetic repairs permitted.Some minor splits permited | |
| C | lmproved C veneer with splits limited to 1/8 inch width and knot holes or other open characferistics limited to 1/4x1/2 inch.Plugged Wood or synthetic repairs permitted.Admitssome broken grain | |
| C | Tight knots to 1-1/2 inches.Knot holes to 1 inch across grain and some to1-1/2 inches if total width of knots and knot holes is within specified limits.Synthethic or wood repairs.Discoloration and sanding defects that do not impair strength permitted.Limited spits allewed. | |
| D | Knots and knot holes to 2-1/2 inch width across grain and 1/2 inch larger within specified limits.Limited splits are permitted.Limited to Exposure 1. | |