Thermo-D AB RW Sawn Timber is a thermo-modified wood product. AB RW products have a consistent, high-quality appearance because they are made from sawn timber. The grade “AB” refers to the quality of the wood, with “A” indicating the highest quality and “B” indicating a slightly lower quality. Wood with the “RW” designation will typically be reddish-brown in colour. Timber from Thermo-D AB RW can be used for decking, siding, flooring, and furniture applications.