Quick Connect Filter, For Use With Culligan, Reduces Atrazine, Lead, Lindane, Particulates, Sediment, Micron Rating 0.5 micron, Flow Rate 0.5 gpm, Diameter 2 1/2 in, Overall Height 10 in, Service Life 500 gal, Filter Media Carbon, Maximum Temperature 100 Degrees F, Application Under Sink, Standards NSF 42, NSF 53, Series US-EZ and IC-EZ, Compatible Mfr. Model Number IC-EZ-1, IC-EZ-3, IC-EZ-4, US-EZ-1, US-EZ-3, US-EZ-4, Compatible with Grainger Part Number 212W94, 29AH53, 29AH54, 29AH55, 29AH59