RV Portable Storage Station Suction RV Soap Storage Saver (Heavy Duty Suction Hold) Patented Red Line warning system: if the Station begins to lose suction, youll know in advance before anything falls Simply push the button and its secure Strong holding power up to 20 pounds (9.1 kg.) New Suction Technology: Suction-sticks to any smooth, non-porous surface No adhesives or screws needed