[ZeroCool2u]

The founder mentions the dust proofing as a nice side effect of the high back pressure, but I'm wondering if that might actually be necessary to prevent the mechanical membranes from getting jammed with gunk and failing over time.

[flog]

I wonder if they could reverse the flow direction periodically to flush it

[robotnikman]

I know some laptops do that to keep their heatsinks from clogging, not sure how effective it actually is though.