The Replacement Brand RB-D30 replacement water filter is comparable to filters such as the Culligan D30, and the GE FXULC/FXUVC. This 0.5 micron 10 in. x 2.5 in. filter set will reduce chlorine taste and odor, as well as reducing other impurities in the water through an under the counter system, or as part of a Reverse Osmosis system. This filter ensures great tasting and high quality water.