Using the Deltana 4 x 4 x 1/4 Radius Hinge is easy. First, make sure the door and the frame are clean and dry. Then, align the hinge with the pre - drilled holes on the door and frame. Use the provided #12 x 1/2 machine screw for the frame and #12 x 1 wood screw for the door. Tighten the screws firmly but don't over - tighten as it may damage the hinge or the wood. When it comes to maintenance, regularly check the screws to ensure they are tight. Wipe the hinge with a clean, dry cloth to keep it looking good. If you notice any rust spots, use a mild steel cleaner to remove them. Avoid using abrasive materials that could scratch the hinge's finish. Also, keep the hinge away from excessive moisture to prevent rusting.