This Rev-a-Shelf 432-bfbbsc-6C 6'' Base Filler Soft-close Pullout Between Cabinet Organizer revolutionizes otherwise wasted space in your kitchen.Normally a "filler" or extra space is simply covered up with a decorative front, but Rev-a-Shelf's line of fillers turns that otherwise wasted space into useful space. Fillers are intended to be installed in new kitchen cabinet construction and will not work in existing cabinets. This model is a 6'' wide design and features adjustable shelves with chrome rails and soft-close full-extension ball-bearing slides. This package contains (1) wood filler and (3) adjustable shelves with chrome rails.