Using your Access Lighting ModPLUS 12 - inch Trim is easy. First, make sure your lighting fixture (20834 or 20840) is turned off and cool. Then, carefully attach the trim to the fixture. Since the lamp isn't included, you can choose the one that suits your needs. As for maintenance, simply wipe the trim with a soft, dry cloth regularly to keep it looking good. Avoid using abrasive cleaners as they might damage the steel finish. If you notice any loose parts, check the connections and tighten them gently. With proper use and care, this trim will enhance your lighting for a long time.