Whether it is a 90° or 180° door,or a left/right door opening,it can be easily adapt. The can provide additional,security,and privacy,even if others have the,they can not enter when this installed. Suitable for most sliding door,barn door,window,cabinets,widely used in bedrooms,garages,garden,bathrooms,kitchens,offices,hotel. Sliding door is make of Zincs alloy,rusts and resistant,not easy to break and deforms,strong and Enduring. Barn door have a stable swivels and can operated smoothly and freely to open and close the.