6 x 6 in. x 20 ft. Treated Lumber - #2 Grade is a reliable and versatile choice for various construction and outdoor projects where appearance is of moderate concern. This #2 Grade lumber features moderate-sized knots, which may occasionally be unsound, and can have a considerable amount of wane. Treated to resist decay and insect damage, this lumber is i for outdoor and high-moisture environments, ensuring long-lasting performance. Whether you're building structural supports, fencing, or garden projects, this treated lumber a practical and economical solution.