Printer Enclosure Filter exhaust port.

This is a filtered exhaust port I made for soft and hard enclosures. It mounts via a sandwich plate. I designed it around 130mm activated carbon filters that I had on hand. The inside plate can mount a 140mm exhaust fan. I opted to have a 4in inline fan hooked up via the 4in adapter. Hardware needed is short M3 threaded inserts and M3x6 and M3x8 hardware. You might not need the M3x6. my 8mm bolts were bottoming out plastic in the shallower holes on the front and the back. The deeper 6 holes (3 on left 3 on right) can accept deeper thread inserts if you wish. Also if you are mounting this to a hard enclosure you may need to take the thickness of material in account for the bolt lengths.