Selflok Weatherboards have a super simple self locking system that aligns every board perfectly. Precise routing gives the product a beautiful and unique ship lapped profile which has become the all time Weathertex favourite. Selflok Millwood Ruff-Sawn board provides a surface finish that has the characteristics of un-uniformed vertical and horizontal shallow lines. The 300mm board contains two 25mm pattern indentations. The pattern begins with a narrow groove, with a flat base. This is followed by a semi circle ridge; a small curve then eventuates, allowing the pattern to meet with the Ruff-Sawn finish of the Millwood Ruff-Sawn board. When the following board is placed on the previous, both boards create the second pattern indentation. Curved walls up to a 2.5m radius can be achieved for Selflok.