Make the most out of every square inch of your kitchen space with the Rev-a-Shelf 3"" Cabinet Base Filler Pullout Organizer Rack.Normally a ""filler"" or extra space is simply covered up with a decorative front, but with Rev-a-Shelf's line of fillers, that otherwise wasted area into useful storage space. Fillers are intended to be installed in new kitchen cabinet construction and will not work in existing cabinets. A soft-close design prevents the door from slamming, even when closed in a hurry. This model is a 3'' wide design and features adjustable shelves with chrome rails and full-extension ball-bearing slides. This package contains (1) wood filler, and (3) adjustable shelves with chrome rails and mounting hardware.