weathershield 1 in. x 2 in. x 8 ft. pressure-treated board
the width of the saw blade is approximately 1/4 inch and a board typically goes through one or two passes to get to the final dimension. that's why a 2x4 is actually 1 1/2 x 3 1/2 inches. the difference in stated size and actual size has been a known constant for decades and more.