The MSR AutoFlow Gravity Filter Replacement Cartridge is a replacement for the AutoFlow Gravity Filter. When you're out in the backcountry, you must be prepared to filter your water and when your gunked up old one starts slowing the flow it can be a real dampener on the camp. Toss the worn out cartridge before you head out on the next trip and hook up this replacement for fast and fresh filtered water at the camp.
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