Pivoting door hinges, concealed hinge hardware for heavy-duty wooden doors, hidden door bookcase, and secret door

This set of pivot hinges is suitable for secret doors, concealed doors, shelf doors, cabinet doors, panel doors, wine cellar doors, and closet doors. You can design and create unexpected, cinematic door opening effects. This pivot hinge kit installs on the top and bottom hinges of the door and its frame, and the door opens by pivoting. The weight of the door is supported by robust pivot bearings located at the bottom and on the floor. Installation Notes: Installation should be carried out by a professional. The door and its frame should be designed in advance, ensuring sufficient clearance between the door and the frame to avoid any obstruction to rotation. The hinges must be pre-inserted into the frame, door, and floor to ensure proper integration. Contents: Top hinge for door frame, top hinge for sash, bottom hinge for sash, floor hinge, screws, and guide rails.