The removable plastic vent really detracts from the overall aesthetics. I don't understand why it's even necessary. Why not just drill holes into the alu panel e.g. apple mac pro & fitting a removable fan filter behind the panel. Judging from the pictures, the side panels are only clipped in & are easily removed for routine servicing & in all likelihood if I need to dust out the fan filters, i might as well remove the side panel anyways to blow out the internal fans and heatsinks.
Just my 2 cents,
Just my 2 cents,