Using the Deltana 4' x 4' x 1/4' Ball Bearings Radius Hinge is easy. First, make sure the door and frame are clean and dry. Then, align the hinge with the pre - drilled holes on the door and frame and use the #9 x 1' wood screws to secure it. When installing, check that the hinge is straight so the door can open and close smoothly. As for maintenance, you can wipe the hinge with a dry cloth regularly to keep it clean. If you notice any rust or damage, use a mild steel cleaner to remove the rust. Avoid using harsh chemicals as they may damage the finish. Also, make sure to check the screws periodically to ensure they're tight. With proper use and maintenance, this hinge will serve you well for a long time.