Alexandria B-C Grade Pine Plywood is premium on one side. Superior dimensional stability. The front face is grade B and the rear face is grade C. Suitable for in home building floors, outside walls and for general manufacturing of boxes and other non-appearance dependent uses. Other uses include boarding windows and doors to prevent damage or unauthorized entry. Drilling,sawing,sanding or machining wood products can expose you to wood dust,a substance known to the state of Californoa to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. -