Product Description: Under-sink water filter Twin stage quick-change filter 1st: Hollow fiber+Silver carbon (QEV-10UF02) Replace inner filter only, save cost & be friendly for the environment With an NSF certificate drinking faucet Baking paint metal bracket Flow rate: 6 LPM(at 50PSI) The pore size of ultrafiltration: 0.02~0.1µm A lifetime of cartridge: 8, 000 liters