This EarthSmart AF-2 refrigerator air filter fits in place of LG filter model LT120F. The built-in wall mount makes installation a breeze. Simply turn the filter cover to the left to detach from the refrigerator wall. Remove the old filter by pulling it straight out and insert the new air filter by pressing it into the cover. Place the filter cover back on the refrigerator wall and turn it to the right. Reset the change air filter light and you're set for an odor free refrigerator.