The Everpure 4622-20 Nu-Plus Cu Cartridge is a replacement cartridge for the Everpure 4622-20 water filter. This cartridge is made of high quality materials and is designed to provide optimal water filtration performance. It is compatible with the Everpure 4622-20 water filter and is designed to provide long-term filtration performance. The Everpure 4622-20 Nu-Plus Cu Cartridge is a replacement cartridge for the Everpure 4622-20 water filter. This cartridge is made of high quality materials and is designed to provide optimal water filtration performance. It is compatible with the Everpure 4622-20 water filter and is designed to provide long-term filtration performance.