Product review (2 stars): Does not filter heavy metals, does not work to same specifications as OEM LG Brand.
While this is significantly cheaper than the LG OEM version it claims to replace, it does not filter the same amount of chemical compounds. The LG Filter complies with NSF 42 and NSF 53 standards, while this filter only meets NSF 42. Standard 42 deals mostly with water taste (like removing chlorine), while 53 does a lot more chemical and heavy metal filtration. So you are getting a significantly less performance, wish i knew that before i bought this.

NSF/ANSI Standard 53 (which this filter does not meet)
The commonly tested chemical reduction claims for products seeking certification to NSF/ANSI Standard 53 are: heavy metals (arsenic, cadmium, chromium, copper, lead, mercury and selenium), inorganics (fluoride and nitrate plus nitrite) and volatile organic chemicals (chloroform surrogate as well as individual organic chemicals).