New passive, Pop Up Flood Barriers from DENIOS US automatically engage at the first flow of water, protecting buildings and their contents from damaging floods and spills. This unique FM Approved design is fully automatic and requires no external power source or compressed air supply. Flexible design allows installation on inside or outside of exterior doors, with widths available up to 12 feet. Constructed of solid welded stainless steel for chemical resistance and long service life. This self-contained one-piece design is factory adjusted and lubricated, and easily installs in existing doorways. When not in use, it stores horizontally in the floor permitting normal vehicular traffic. DENIOS US Pop Up Flood Barriers are NFPA-, IFC-, and OSHA-approved. They are built in Louisville, KY and proven in thousands of installations worldwide. They are ideal for use anywhere that flooding is a concern or spill containment is desired.