BGEARS 80mm Fan Filter With Washable Filter - 80 x 80 x 10mm

Comment:
It is not the best filter out there, but it does its job great. The filter material is not that thick, so you must clean it on a monthly basis or else the dust will get inside. But in the other hand, it doesn't obstruct airflow. Cleaning is a snap, just rinse it under running water (and let it dry) or with a small vacuum and you are set.

Comment:
The good news is that it does'nt restrict the air flow much. The bad news is that the filter material is so thin that it barely filters. Cleaning the filter is also problematic since you need use 4-crowbars simultaniously to unsnap its plastic cover.