This part is the replacement water filter cover for your refrigerator. The cover protects the water filter to prevent damage. If the water filter cover is cracked or missing, you should replace it. It is made of white plastic and is approximately 12 inches long, 5 inches wide at one end, and 4 inches wide at the other. To replace the water filter cover, simply depress the locking tabs and remove the old cover, then snap the new cover into place. This part is sold individually.