H2O Dual Stage Under Sink System
with 3/8" Tubing and Ball Valve
(Cartridges Sold Separately)

Build Your Own System. Choose from our large selection of Filter Cartridges to meet your exact needs and desires.

Click below on category of filter cartridges that you would like to use, or look at them all! H2O offers you the widest number of options using our UCF series of under sink systems.

UCF under sink systems include CCK Quick-Connect Fittings (3/8" Union Elbows & 3/8" Ball Valve) Tubing, Housing Wrench and Bracket.