Inline replacement filter with 1/2" threaded fittings. Fits many OEM applications. Reduces sediment, chlorine, unpleasant taste & odors & voc's. NSF Certified. Tear Drop #1. Inline replacement filter with quick connect inserts. Fits many OEM applications. KDF media in filter to inhibit Bacteria growth, reduces chlorine, unpleasant taste & odors & voc's. Will interchange with other brand #2 filters. NSF Certified. Tear Drop #2. Inline replacement filter with 1/3" threaded fittings. Fits many OEM applications. KDF media in filter to inhibit bacteria growth, reduces chlorine, unpleasant taste & odors & voc's. Replacement filter for FP10GKTUC. Will interchange with other brand #3 filters. NSF Certified. Tear Drop #3. Inline replacement filter with John Guest quick connect fittings. Fits many OEM applications. KDF media in filter to inhibit bacteria growth, chlorine, unpleasant taste and odors & voc's. Will interchange with other brand #4 filters. NSF Certified. Tear Drop #4.