The treated pine decking 90x22x4.8 is a board that is 90 millimeters wide, 22 millimeters thick, and 4.8 meters long. These specifications are essential to know when planning and designing a deck, as they determine the size and coverage of each individual board. This is a decking material made from pine that has undergone a treatment process to enhance its durability and resistance to decay, insects, and the elements. Pine is a softwood that is widely available and relatively inexpensive, making it a popular choice for decking, especially when treated to withstand outdoor conditions.