Abundant Flow Water PRO-Alpha 4 Stage Mikro Alpha Portable Reverse Osmosis Water Filter System with 75 GPD Membrane 4 Stage Portable RO System great for cabins, campers, RV, and apartments 75 GPD membrane produces about 2-3 gallons per hour Provides 96-98% effective contaminate removal, including chlorine, fluoride, salt, and many others Garden hose adapter makes for simple use and easy storage Standard-size filters last about 1 year. Comes with 30 satisfaction guarantee! This is an O.E.M. part