Plywood Grades
A Grade (A) This has a smooth, tight-cut, full-length veneer face. If more than one piece of veneer is used, they are book-matched and appear parallel.
Grade (1) Grade 1 has a smooth, tight cut and a full-length veneer face. Face veneers may not match, but contrasts in color and grain will not be extreme. The joints will be tight.
Industrial Grade (4) This is faced with mill option veneer, which may contain open defects.
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Cores
This is the innermost portion of plywood, often referred to as the "center." A core may be made of veneer, fiberboard, particleboard or lumber.
• VC=Veneer Core • LC=Lumber Core • FL=Flake Core • MDF=Medium Density Fiber Core