The Omnipure K-Series K2540 filter is a coconut GAC carbon inline filter. It comes in 3/8" QC, 1/4" QC, and 1/4" 90 Degree FQC that make it really easy to install and replace. This filter can be used as a post r.o. filter. It can be used in ice makers, refrigerators, beverage equipment, drinking fountains, under the counter systems, R.O.Systems and in conjunction with purification systems. This filter also aids in the removal of taste, odor and chlorine taste and odor. Dimensions: 2" W X 10" L Flow Rate: .5 GPM Maximum Pressure: 125 PSIG Maximum Temperature: 100 F Service Life: 1 Year Filtration Media: Coconut Shell Granulated Activated Carbon Reduces: Chlorine Taste & Odor Fitting Size: 3/8" QC, 1/4" QC, and 1/4" 90 Degree FQC Omnipure K2540 has been tested for performance under NSF Standard 42.