Deep 4” shelf at top of unit provides extra storage space for bottles, aerosol cans and other cleaning supplies. Five extra hooks at bottom of unit conveniently store hanging items such as dusters, rags, gloves, and more. Holds your mops and brooms 4” away from doors and walls. Includes pack of 6 rubber can grips; rubber caps that can be applied to the individual cams if the units are experiencing slippage or grip issues.