Bed and Furniture Risers by Creative Bath, 4-Count, White Each riser measures 6 5/8" square at base x 6" high. Risers are white in color. Made from a high impact plastic and VERY heavy duty. Top of riser has well to "cradle" bed wheels or casters this measurement approx. 3" square and 1" deep. Place blocks under legs or wheels of bed frame to add 5 - 6" of added height.