Lumber, Plywood, and Structural Panels-Overlay Plywood

APA trademarked High and Medium Density Overlay plywood (HDO and MDO) combine the toughness of exterior-type plywood with the superior wear of an overlaid surface. These features place HDO and MDO among the most durable construction materials on the market today. Common applications for high and medium density overlay plywood include construction (including siding, soffit, fascias, chimney enclosures, and garage doors), industrial uses, concrete forming, agriculture, and marine uses.