For those who mainly print PLA on their P1S or X1C, the carbon filter is arguably superfluous. Removing the carbon filter increases exhaust flow by a bit, and this vent allows another way for air to be sucked out of the chamber.
Great Model. It fits perfect. I made a few changes in the slicer and this is what I got. There is way more flow than the stock cover. Printed in transparent PETG with PLA support interface.