Upgrade a RO system by adding this DI stage to make it RO/DI.

Includes:
Acrylic Housing, cap, O-ring and 1/4" JG fittings.
One (Refillable) DI cartridge containing color-changing DI resin, ready to use.
Metal bracket attached to easily screw it to the wall (screws not included) 
3' of blue tubing