Rev-A-Shelf''s fillers revolutionized otherwise wasted space in your bathroom/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 vanity cabinet construction and will not work in existing cabinets. The adjustable shelves feature clear polycarbonate rails and non-skid vinyl shelf liners. Clear polycarbonate storage trays are also Included: to keep smaller items organized. The 30"� height are available in 3" and 6" widths. All sizes are 19" in depth and glide on Blum tandem soft-close system-Included: (1) Wood filler, (3) adjustable shelves with Clear Polycarbonate rails, (6) Polycarbonate bins and mounting hardware-Slide Type: 110lb Full-Extension BLUMOTION Slides w/Soft-Close-Once installed simply attach your matching panel or door-Fillers do not go inside of a cabinet, they install in-between cabinets-Adjustable shelves (middle shelf is fixed)-Designed for exactly a 3" opening that is 30" tall-Construction: Fully Assembled Maple Wood construction with a clear coat finish for durability-Comes fully assembled and ready to install