BIRCH NUMBER 2 SHOP BIRCH NUMBER 2 SHOP grade is ideal for finger-jointed panels and specialty items such as chair and table legs. BIRCH NUMBER 2 SHOP grade consists of shorter clear two-face and clear one-face cuttings. Widths: 4 inch admitting (by volume) 5 percent narrows (85.73 mm) minimum. Lengths: Length: 72 inch (182.88 cm) minimum. Minimum Size Cuttings:  3 inch (76.20 mm) wide by 24 inch (60.96 cm) and longer clear one-face cuttings. Back of cuttings are sound or better. Overall Minimum Yield:  50 percent.