This product has been discontinued by the manufacturer. Please follow this link http://www.filtersfast.com/Ametek-Pentek-US-Water-Filters-cat.asp to find a suitable replacement.
The Pentek QC10-SED1R Replacement Cartridge reduces sediment down to 1 micron in your drinking water. Replacement cartridge for the QC10-SED1 Quick Change Filter System. Part number 255688-43.
NSF/ANSI Standard 42 Tested and Certified for Sediment Removal down to the 1 micron level.
To change simply twist out the old cartridge and twist in the new cartridge. No Fuss, No Mess! The QC10SED1R cartridge can be used in any of the following systems: QC10-CBR, QC10-EP, QC10-GAC, QC10-TSGAC, QC10-CB1, or QC10-SED1.
Please note that the Pentek QC10-SED5 is a compatible replacement for the Pentek QC10-SED1R.