Quick Connect Filter, For Use With Under-Sink, Reduces Atrazine, , Chlorine Taste and Odor, Cyst, Lead, Lindane, Viruses, Micron Rating 0.5 micron, Flow Rate 0.8 gpm, Diameter 8 1/4 in, Overall Height 9 1/4 in, Service Life 350 gal, Maximum Temperature 100 Degrees F, Standards NSF 42, NSF 53, Compatible Mfr. Model Number US-3UF, Compatible with Grainger Part Number 53CF11, Connection Size 1/2 in, Features Ultra Filtration Replacement Set for US-3UF, Maximum Pressure 100 psi