SpiroPure SP-CBC-20BB 20x4.5 1 Micron NSF Certified Coconut Shell Carbon Block Water Filter Cartridge CB-45-2001 (Case of 4)

1 MICRON RATING: With a nominal filtration rating of 1 micron, our quality carbon filter reduces chlorine taste & odor for a wide range of applications 20x4.5 NOMINAL: Actual filter dimensions are 20" L x 4.49" D, and the filter is made with NSF certified powdered activated carbon filter media NSF CERTIFIED: This filter cartridge is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements only QUALITY REPLACEMENT: Comparable to Hydronix CB-45-2001 and other 20x4.5 carbon water filters 30-DAY GUARANTEE: SpiroPure filters have a 30-day money back guarantee. If you do not like the performance of your filter, you can send it back within 30 days of purchase for a full refund