The Omnipure K-Series K2528-JJ filter has 1/4 FQC quick connect fittings. The filter is easy to install and requires no tools to install. It can be used as a post r.o. system filter and can also be used in refrigerators, ice makers, drinking fountains, and all under counter reverse osmosis systems.Dimensions: 2" W X 10" L Flow Rate: .5 GPM Maximum Pressure: 125 PSIG Maximum Temperature: 100 F Service Life: 1 Year or 1000 Gallons Filtration Media: Granulated Activated Carbon Volume Cubic Inch: 9.5 Fitting Size: Quick-Connect 1/4" fittings Omnipure K2528-JJ has been tested for performance under NSF Standard 42. Additional Details ------------------------------ Product description: The Omnipure K-Series K2528-JJ filter has 1/4 FQC quick connect fittings. The filter is easy to install and requires no tools to install. It can be used as a post r.o. system filter and can also be used in refrigerators, ice makers, drinking fountains, and all under counter reverse osmosis systems.Dimensions: 2" W X 10" L Flow Rate: .5 GPM Maximum Pressure: 125 PSIG Maximum Temperature: 100 F Service Life: 1 Year or 1000 Gallons Filtration Media: Granulated Activated Carbon Volume Cubic Inch: 9.5 Fitting Size: Quick-Connect 1/4" fittings Omnipure K2528-JJ has been tested for performance under NSF Standard 42.