Nikken Wall Mount Shower Head 1 Filter Cartridge -1331, Replacement for Water Filter Purifier System 14662 or 1383 | PiMag MicroJet Ultra Shower System | Easy to Install NSF/ANSI 177: Shower filters attach directly to the pipe just in front of the homeowner's showerhead and are certified to only reduce free available chlorine. The concentration of free available chlorine in water entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the system, as specified in NSF/ANSI 177. RATED CAPACITY: Rated flow service is at least 2.5 gallons/ 9.5 liters per minute. Maximum Working Pressure of 100 pounds per square inch pr 860 kilopascals. REPLACEMENT: It must be replaced if it has reach 10,000 gallons or 6 months of use, whichever come first. This may need to be performed less or more frequently, depending on operating conditions. COMPATIBILITY: This is a replacement filter Nikken part #13831 is for the PiMag MicroJet Wall Mount Model #14662. INCLUDES: (1) PiMag MicroJet/Ultra shower systems Replacement Filter Cartridge for WALL MOUNT