Cape Lumber Marketing supply OSB 3  in a range of thickness's from 6mm - 22mm in a board size of 2500mm x 1250mm. OSB 3 has been used as a viable alternative to Plywood and is suitable for dry and humid conditions. OSB 3 - is ideal for numerous load bearing applications such as roofing and flooring. Common uses include : roofing, flooring, wall sheeting, site hoarding, crating, furniture, crating and many other applications.