The 4WCBM Series Waste Containers are the only bottom mount units available with the Rev-A-Shelf® patented Rev-A-Motion® soft-open/soft-close slide system. The innovative gas spring assisted soft-open allows the unit to open smoothly and the soft-close shuts softly, even under the heaviest of loads. All units feature metallic silver waste containers and built-in door-mount brackets. Single units have a removable solid wood bin in the rear for bag storage. The 4WCBM is easy to install with only (5) screws and features a beautiful dovetail constructed frame and concealed slides for a clean look.