This board has been pressure treated for above ground (AG) applications. AC2® brand treated wood products use MicroPro® technology, which is a revolutionary way to pressure treat wood for decks, fences, landscaping, and general construction uses. MicroPro® technology offers many benefits, including significantly improved corrosion performance. It is the first treated wood process to be certified under the Scientific Certification Systems Environmentally Preferable Product (EPP) program based on life-cycle assessment. MicroPro®/AC2® pressure-treated wood products are protected from termites and fungal decay and are backed by an Osmose Residential and Agricultural limited warranty program (see warranty for details).