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GravityWorks Cartridge Flows Like This
If you're looking at this cartridge you probably already know about its features and benefits. If not, see my review of the excellent Platypus GravityWorks 4.0L Filter System. I think the GravityWorks systems flow like a stream!
Video (test/first video upload) shows Arkansas' Buffalo River Trail after a spring rain.
Foam drop pads
Its interesting to note the gray ends are foam. This is to absorb shock should the filter get jostled or dropped. Apparently, the filter material itself is brittle.
Bigger than expected.
These filters are very light, but might be a little larger than you expect. They just always seem small in the images.