The Soft Close Hanger for (5537) 4 Wheel Trolley is made of Aluminium, hence can be applied in interior and exterior sliding door systems due to its corrosion resistance. It is typically used in commercial spaces, apartments, and also luxury locations for its stylish design. With an easy installation inside the track, the soft close mechanism and damper allow the door to slide and close effortlessly with minimal sound. The Soft Close Hanger supports a 150kg weight capacity per door and it is compatible with the 150kg tracks.