4 x 4 in. x 12 ft. Treated Lumber - Grade - KDAT is an excellent choice for projects that demand both durability and aesthetic appeal. This lumber undergoes a special process where, after pressure treatment, it is kiln-dried to remove excess moisture, restoring it to its moisture content level. This treatment enhances the wood's strength, stiffness, and dimensional stability. The Grade designation means this lumber features fewer, smaller, sound, and tight knots with less wane d to #2 Grade, resulting in a cleaner and more attractive finish. for outdoor and high-moisture environments, this treated lumber long-lasting performance and reliability.