Omnipure K5633-JJ GAC Water Filter Contaminant Reduction:. Chlorine Reduction: Class 1. Omnipure K5633-JJ GAC Water Filter Specs:. Dimensions: 2.5" W x 12" L. Flow Rate: .5 GPM. Maximum Pressure: 125 PSIG. Maximum Temperature: 100 F. Service Life: 1 Year or 2500 Gallons. Filtration Media: Granulated Activated Carbon. Volume Cubic Inch: 35.5. Fitting Size: Quick-Connect 1/4" fittings. Omnipure K5633-JJ has been tested for performance under NSF Standard 42.