The 4' x 8' x 3/4" .80 CCA Treated CDX Plywood Sheet is a robust and versatile building material designed specifically for outdoor projects. Treated with .8% Copper Chromated Arsenate (CCA), this plywood offers enhanced durability against rot, decay, and insect damage, making it ideal for various applications. The CDX grade features a rougher surface on one side, making it suitable for structural uses where appearance is less of a concern. Perfect for roof sheathing, subflooring, exterior walls, and outdoor structures like decks and garden sheds, this plywood sheet delivers strength and versatility for any construction project.