Product review (5 stars): Functions and fits my LG perfectly.  Change filter light still alerts need for new filter properly!
When I first needed to replace the filter in our new LG refrigerator, I took a chance on the Waterdrop filter vs. the (expensive) "official" filter.  The Waterdrop filter fit and functioned perfectly.  Today, when our "change filter" light came on right on schedule, I returned to purchase a new Waterdrop filter.