Oriented strand board (OSB 3), also known as flakeboard is a type of engineered wood similar to particle board, formed by adding adhesives and then compressing layers of wood strands (flakes) in specific orientations.
OSB may have a rough and variegated surface with the individual strips of around 2.5 cm × 15 cm (1.0 by 5.9 inches), lying unevenly across each other and comes in a variety of types and thicknesses.
OSB-1:it can be used in the dry environment
OSB-2:it can be used in the dry environment with weight capacity
OSB-3:it can be used in the moisture environment and with weight capacity
OSB4:it can be used in the moisture environment and with more weight capacity
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