Rev-A-Shelf's fillers revolutionized otherwise wasted space in your vanity. Normally a "filler" or extra space is simply covered up with a decorative front, but with Rev-A-Shelf's line of fillers, it turns that otherwise waste space in to useful space. Fillers are intended to be installed in new cabinet construction and will not work in existing cabinets. This pullout features natural maple construction, full-extension, TANDEM, 110 lb. rated slides with BLUMOTION soft-close, and four shelves with acrylic accents.