Amtek Atlas Aquafilter Aqfilters USTM Clamg Liff BWT Pentek GE Watts 3M Ecosoft Acura Suez Pentair Spectrum Finerfilters Osmio Doulton Aquahouse. Longevity: 3 - 6 months or 12000 liters of water (depending on the feed water quality).
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