Power up your AquaBrick® with this DuraFlo™ replacement water filter from Sagan Life. Compatible with countertop, gravity-fed & candlestick water filter systems. Use the DuraFlo™ Water Filter Replacement in your AquaBrick® System to effectively remove virus, bacteria, giardia, cryptosporidium, and other water-borne toxins and chemicals from ANY nonsalt water source. HIGHLY EFFECTIVE REPLACEMENT FILTER FOR MOST COUNTER TOP, GRAVITY FED WATER FILTER SYSTEMS, INCLUDING BERKEY®.  INCLUDES FILTER ONLY