MSR Autoflow Gravity Filter 4L

The supreme ease of the AutoFlow Gravity Filter has converted many backcountry travelers to pump free water filtration. Now, it offers the luxury of effortless water storage and filtration in a more compact, lightweight and streamlined system. Efficient hollow fiber technology filters up to 1.75 liters per minute, and quick and easy tool free cleanings maintain high flow rates on extended expeditions. Choose the 4 liter system for groups and base camps. The 2 liter system is perfect for backpacking pairs. Tested: Meets NSF protocol P231 for removal of bacteria 99.9999% and protozoa 99.9% from beginning to end of filter life in worst case water. No Pumping: Lets gravity do the work so you don't have to. Fast: Filters more than 1.75 liters per minute. Lightweight: 2 liter system weighs only 300 g 10 oz.. 4 liter system weighs just 315 11.1 oz. Field Maintainable: Can be backflushed repeatedly without disassembly to regain flow rates. Adaptable: Filter directly into most any bottle or reservoir with included Universal Bottle Adapter. 4 LTR Color No Weight Standard 11.1oz Weight Metric 0.32 kg Width Standard 11.3 in Width Metric 28.7 cm Length Standard 20 in Length Metric 50.8 cm Country of Origin Made in USA