7/16" thick oriented strand board (OSB) engineered for structural applications and general construction use. This 4'x9' sheet offers excellent strength-to-weight ratio and cost efficiency for framing, sheathing, and subflooring projects. SHOP SE 70 grade delivers reliable performance in dry conditions, making it ideal for interior applications, roof decking, and wall bracing. Durable and easy to work with using standard tools. A versatile building material trusted by contractors and DIYers alike for dependable structural support.