Using this closing bar is easy. First, make sure your fridge is unplugged for safety. Then, remove the old closing bar from between the two fridge doors. You can do this by gently prying it off if it's snapped in place, or by unscrewing it if there are screws. Once the old bar is out, take your new Samsung closing bar and position it correctly between the doors. Press it firmly into place or screw it in tightly. Before plugging your fridge back in, check that the bar is properly installed and that the doors close smoothly. As for maintenance, keep the bar clean. You can use a soft, damp cloth to wipe it down regularly. If you notice any dirt or debris in the grooves of the bar, use a small brush to clean them out. Also, check the bar periodically for any signs of wear or damage. If you find any issues, contact us right away. And remember, if you're ever unsure about the installation or use of this part, don't hesitate to give us a call.