Spruce plywood is made of Nordic Spruce veneers, using weather resistant phenolic resin glue according to EN 314-2 class 3 (exterior). Surface quality III/III - sanded both sides of the panel, pin knots and sound knots permitted. Other knots and holes permitted up to 40 mm diameter. Open splits and checks permitted up to 10 mm wide. Spruce plywood is intended to be for protected external use as a structural component in humid conditions - floor, roof, wall constructions. Packing material production, etc.