Shapes Unlimited offers radius components, cones and columns which range in diameters from 6 in. to 48 in. The company also fabricates two-piece column wraps used to conceal existing columns, which are finished with a choice of laminate or veneer. These decorative column covers are built to assemble in the field with ease, Shapes Unlimited says. (800) 811-1385, ShapesUnlimited.com