The UVMAX G Model (650645) is a 20 GPM point-of-entry system that renders chlorine-resistant parasites, bacteria and viruses such as Cryptosporidium, Giardia and E. Coli harmless. This system features a lamp age indicator, malfunction monitor, CoolTouch fan and stainless steel chamber. The UVMAX G has been discontinued with the VIQUA F4 650686 as its replacement. *UVMax G has been renamed VIQUA F4. Replacement parts available below