Flow-Pur INLINE EXTERIOR No 12 FILTER Inline exterior filter using combination KDF and Activated Carbon media for bacteria, chlorine, Voc's and unpleasant taste and odor reduction. Equipped with garden hose fittings to install outside RV or boat to water hose. Filter includes flexible non-kinking hose. Flow rate 2.5 gpm. No 12 Filter: Exterior Inline Garden Hose.