"Magnetic Door Barrier" has reinvented safety signs for the service industry! Keep your patrons safe while your employees stay hard at work. Simply attach the magnetic ends to temporarily close-off doorway. Our smart barricade attaches to any typical metal door frame (doorjamb). Most of which you can find within your very own city skyline - high-rises, hotels and commercial office buildings.This particular unit is extra long, it can also be used for wider doorways found in the healthcare industry (ie: hospital patient rooms).