Pre-cut rails that easily secure to posts, piers, walls or structures to create a louver screen for your outdoor space. The side rails accept common 5/4 in. x 6 in. deck boards and can be easily cut to size to enclose patios, decks, AC units, pool equipment and more. Customizable to fit most spaces.Treated wood is typically still wet when it's delivered to The Home Depot or job site. As it dries, you should expect slight changes in width and length. As lumber dries, it may split, cup and warp. This is more likely to occur to occur in lower-grade boards, where knots and uneven grains are already present. Each piece of lumber is unique and carries physical characteristics that may include the following: knots, warping, shrinkage, swelling and/or splitting. Product Nominal Dimensions : 2 in. x 4 in. x 8 ft. Easy to assemble Attractive way to gain privacy and screening Customizable to fit most spaces Louver brace for additional support when spanning greater than 4 ft. Pressure-treated for long-lasting performance No two pieces of lumber are the same. Color, grain pattern and texture will vary as well. Use #2 grade lumber when both appearance is not the most important to you project. May have wane (bark edge) on corners Use #2 grade lumber when strength is the main feature you are looking for on your project. May have wane (bark edge) on corners Use #2 grade lumber when strength is the main feature you are looking for on your project.