BIRCH NUMBER 1 SHOP BIRCH NUMBER 1 SHOP grade is a high-grade board selected for clear two-face and clear one-face applications. The clear two-face cuttings are ideal for panel production, cabinetry, and furniture. The clear one-face cuttings are well suited for casegood fronts and tops, and cabinetry requiring only one clear face. BIRCH NUMBER 1 SHOP grade maximizes 4 inch (101.60 mm) wide by 24 inch (60.96 cm) long and 3 inch (76.20 mm) wide by 36 inch (91.44 cm) long clear two-face and one-face cuttings. Widths:  4 inch admitting (by volume) 5 percent narrows (85.73 mm) minimum. Length: 72 inch (182.88 cm) minimum. Minimum Size Cuttings: 4 inch (101.60 mm) wide by 24 inch (60.96 cm) and longer and 3 inch (76.20 mm) wide by 36 inch (91.44 cm) and longer clear one-face cuttings. Back of cuttings are sound or better. Overall Minimum Yield:  66-2/3 percent.