The WD-T4-A RO system offers dual water flow options—standard RO-purified water and mineral-enhanced alkaline water. With 10-stage filtration, a 450 GPD flow rate, and a 2:1 pure-to-drain ratio, it ensures clean, great-tasting water with minimal waste. A tankless design maximizes space and prevents contamination, while smart filter life reminders keep you on track. | Waterdrop | | WD-T4-A Alkaline pH+ RO System with Extra Filter Set, NSF/ANSI 372 Certified, 10-Stage, 450GPD, Tankless, 2:1 | White | Best Buy