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