Fan for MK3 power supply in LACK Enclosure

I designed two versions to bring fresh air into the PSU to keep it from getting too warm inside the enclosure. In the first version the 30mm fan was inside, it got louder and louder over time. Then I screwed a 50mm ball bearing fan on the outside, which is more effective.
I'm planning to add a dust filter, which will prevent me from reaching into the rotor blades at the same time. A lot of dust is already sucked in, as you can also see with the cooling fan.

It is also easy to remove the Printer, since the tubes are only slided into each other ;-)

To avoid unnecessary support structures, I printed the hood in two parts and glued them together.

Sorry, it is difficult to take photos in the tight housing.