This very affordable DI Cart (de-ionization filtering) is a single stage system intended for areas with low TDS quality water (not too many minerals in source water) or for occasional use.
This cart is also an ideal substitute for when you need to clean above 4 stories but you have another system that would normally require a booster pump and you don't want that.
Inside the blue housing is a refillable cartridge. Holds approx. 1/5 cubic ft of resin. Replacement resin here.
The cart comes pre-loaded with DI resin along with a hand held TDS water quality meter.