Dimensional Lumber is materials thicker than 1" and pre-sized to nominal dimensions such as 2x4, 2x6, 2x8, 4x4, 4x6..etc. Actual dimensions are usually 1/2" to 3/4" less than the stated nominal size. Boland Maloney carries a full range of Dimensional Lumber in Fir, Spruce, Yellow Pine, Redwood & Western Red Cedar. Just click on the Species in the box at the upper left to check stocked sizes.