Walnut plank flooring is available in two grades; rustic, and select. Walnut rustic plank has a naturally dark rich color with some blond sapwood and scattered knotts.  Walnut select plank has a more uniform color and fewer knotts than the rustic grade.  Walnut flooring is a unique product for the above agerage homeowner.  Random width 3,4,5 and 6" wide. 1-10 ft long.  Other sizes available.