Made of 2-pine re-saw layers, the Surewood-LNL 48 in. x 11-1/2 in. Unfinished Pine Tread is applied to a radiate pine, edge glued core. For interior use only, our pine tread features a clean, uniform look that is clear of most knots and imperfections commonly found in solid pine treads. The core is stable and resistant to warping, checking and cupping and is perfect for use in carpet-grade, stain or painted tread applications. It has a 1 in. thickness and is sold unfinished, allowing you to finish it to match other stair parts or decor. It will fit stairs up to 48 in. in width and accommodates tread runs up to 11-1/2 in. From stair treads, stair railing and a complete selection of Stair Parts, Surewood-LNL has what you need to make your stairs beautiful.