Roseburg's AB Marine Panel is marine-grade plywood that is produced entirely of Group 1 species of veneer. Our marine plywood panel is sanded on both faces. The maximum core-gap size permitted is 1/8 inch. Its exposure durability rating is EXTERIOR and the glue used is a water resistant structural adhesive. It is considered a premium grade panel for use in situations where these characteristics are required. Specialty sizes and thicknesses are available.