Quote:
Originally Posted by Red135
And since the filters draw in air from the snorkel, the front filter may get dirty quicker than the rear. A single filter can gradually draw air further away from the base to compensate.
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the "inverted cone" on the rear filter is supposed to help with that some. From what i have seem, they tend to get dirty at an equal pace... but yes, each design has its pluses and minuses... that is why we offer both