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Old 07-21-2018, 04:49 PM   #6 (permalink)
freebeard
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Those 4-6" long spray-guards are limber enough to move at their ends. 2-3" bristles might be more rigid and act as a baffle, maintaining a pressure gradient.

But still accommodating ground strikes.

Does a perforated plate pass more air when it is perpendicular or parallel to the direction of air flow?
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