Our B/BB Baltic Birch is 2-sided plywood with veneer core. Baltic Birch is a natural product and on the B side of the sheet, which is the clear side, it may have small pin knots and have color variations on the face. On the BB side it may have 1-2 plugs commonly known as footballs as well as knots and different coloration.
Why Baltic Birch vs Domestic Birch? Baltic Birch’s core is unlike domestic plywood. The layers of inner layers are solid birch veneer, cross-banded, and laminated with a laser safe strong adhesive.