designs for Multifunction indoor / outdoor applications including restaurants, warehouse, and hallway door where controlled automatic closing enhances and convenience Complete installation includes 2 auto aligning hinges, 16 screws, and tool to simple retrofitting existing door with industrial spring mechanisms Erosion resistant brushed steel construction and integrated adjustable closures ensures strong across various door materials Ideal for commercial property managers, homeowners, and architects requiring Stable auto closing solution for barn door, retail entries, or partitions Premium steel spring hinges Double action auto close functionality with adjustable speed control, perfect for smooth bidirectional door operate in high transport areas, Manufacturer: JUYAXIN