07.26.09 - THE SIDING IS 3 1/4 INCHES ACROSS THE FACE OF THE PART THAT SHOWS. THE WOOD IS 3/4 INCH THICK AND IS 89 1/2 INCHES LONG. IT IS THE SAME TONGUE AND GROOVE SIDNG THAT IS BEING USED ON THE URTX BOXCAR. THE EDGES ARE BEVELED. - Kirk L. Warner (kwarner)