The CR Spotless Replacement Cartridges are easy to install and virtually hassle free. You can change the resin cartridges in less than 5 minutes. Simply unscrew the watertight housings and remove the spent cartridge. Next, put the replacement cartridges inside the tube and reattach it to the body of the unit. You will receive (2) 20 inch replacement cartridges..

Compatibility: These are replacement filters for the CR Spotless High Output Rolling AND Wall Mount Syetems (DIC-20 & DIW-20).