0.5 MICRON RATING: With a nominal filtration rating of 0.5 micron, our quality NSF Carbon filter reduces fine sediment particles and chlorine taste & odor from tap water 10x2.5 NOMINAL: 10” slim filter made with CTO coconut shell carbon filter media. Actual size of the filter is 9.76" L x 2.72" D” NSF CERTIFIED: This filter cartridge is tested and certified by NSF International to NSF/ANSI Standard 42 for material requirements only QUALITY REPLACEMENT: 10” x 2.5” PAC (Powdered Activated Carbon) water filters, compatible with CBR2-10 / 155268-43 CBR2-10R / 155403-43 CBC-10 / 155162-43 CFB-PB10 / 255681-43 CFBC-10 / 255679-43 FloPlus-10 / 455903-43 SCBC-10 / 155350-43 and SMCB-2510. SpiroPure SP-CBR2-10 10x2.5 CTO Coconut Shell Carbon 0.5 Micron Replacement Water Filter Cartridge.