This Waterdrop T3-C Reverse Osmosis Water Filter is NSF/ANSI 372 Certified and features an advanced 8-stage filtration system with a 0.0001μm RO membrane, effectively reducing heavy metals, chlorine, PFOA & PFOS to deliver pure, great-tasting water, as tested by a third-party laboratory. This tankless under-sink RO system provides a fast, steady 450 GPD water flow and boasts an eco-efficient 2:1 pure-to-drain ratio. It includes smart alerts for filter replacement, an LED light, continuous automatic flushing, and an all-in-one cartridge for effortless replacement. Requiring a plug-in connection, it offers flexible under-sink or wall-mounted installation, saving up to 70% of under-sink space compared to traditional tank systems. | Waterdrop | | WD-T3-C Reverse Osmosis Water Filter, extra 2 RTCB Filters | White | Best Buy