RUSSIAN (BALTIC) GRADE RULES GradeDescriptionB GradeOne piece sanded face with even color. No patches, voids or mineral streaks allowed.BB GradeOne piece sanded face with generally even color. Slight pin knots and mineral streaks allowed. Open knots and defects are cut out and replaced with oval patches.CP GradeThis is a fall down from BB with more patches on the face that …

Birch Plywood – BB Grade – EN636-2  EN314-2PEFC and FSC® certified, also CE Marked Birch Throughout – B/BB & S/BB Grade – EN636-2  EN314-2  Class 3PEFC and FSC® certified, also CE Marked Birch Throughout – BB/WG & BB/CP Grade – EN636-2  EN314-2  Class 3PEFC and FSC® certified, also CE Marked Birch Throughout – CP Grade – EN636-2  EN314-2  Class 3 …

Reasons Why Baltic Birch Is a Preferable Plywood 1. Superior Screw Holding Because the core layers of Baltic birch are actually veneers of birch (rather than a softer, secondary wood)  and form a void-free core, screws bite and hold with 100% of their threads. Conversely, traditional veneer core plywood has voids and is also made up of softer materials so …