The Woodgrain Millwork 4-1/4 in. x 9/16 in. WM 620 Prime Finger-Joint base is the perfect addition to dress up any room. The Woodgrain Millwork Prime Finger-Joint WM 620 base is used cover any imperfections where floor and wall meet. Base Molding can also be used as starter point for a more elaborate built up base boards. Combing other moldings with this base can create looks that range from classic to elegant.