Rev-A-Shelf 3 in Base Filler Pullout Soft-Close, 3", Natural (1) Wood filler, (3) adjustable shelves with Chrome rails and mounting hardware. 100lb Full-Extension Soft-Close slide system. . Fillers do not go inside of a cabinet, they install in-between cabinets. Note: Fillers can only be installed between two cabinets during new cabinet construction.Adjustable shelves..