Using the Deltana 3 x 4 hinge is easy. First, make sure the door and the frame are clean and dry. Then, align the hinge with the door and the frame, and use the #10 x 1 - 1/4 wood screws to secure it in place. When it comes to maintenance, simply wipe the hinge with a soft, dry cloth regularly to keep it looking good. Avoid using harsh chemicals or abrasive materials, as they may damage the finish. If the hinge starts to make noise, you can apply a small amount of lubricant to the moving parts. Also, check the screws periodically to ensure they are tight. With proper use and care, this hinge will serve you well for a long time.