This is a 6-step stringer, pre-cut deck product accessory used in the construction of steps. This stringer has been pressure treated for ground contact (GC) applications and can be completely buried in the ground. It's also suitable for fresh water use and can be submerged. 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. MicroPro™/AC2® technology 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 Koppers Residential and Agricultural Limited Warranty Program (see warranty for details).