Instapure ESSENTIALS Replacement Filter 4-Pack (R2C, R2) Certified to ANSI/NSF 42, fits Instapure F2 ESSENTIALS & F5 COMPLETE Tap Water Filtration Systems - Walmart.com
Instapure IR10 Water Filter Cartridge. Fits: WaterPik® InstaPure IR-10A, IR-10 IF-10A, IF10, IF10A, IF 10, IF 10A. - Walmart.com
Waterpik Shower Filter Light Grey Shower Head 2-GPM (7.6-LPM) in the Shower Heads department at Lowes.com