Our Two Cents
This is a replacement filter for the new "deluxe" model only and will not fit the older Showerwise model. Note that replacement filters for the older model are no longer available and it’s necessary to purchase the new improved deluxe Showerwise Filtration System. We apologize for any inconvenience.Replacing the old filter cartridge is easy! Simply unscrew the Showerwise plastic housing, remove the old cartridge, insert the new cartridge, and screw the housing back together.