Akasa grm washable fan filters 60mm80mm92mm120mm akasa grm80 30 this washable fan filter 80mm from akasa is a pc case fan filter which provides the ideal solution for keeping dust out of your pc while at the same time enhancing cooling performance when dust gathers on the interior of your computer this filter spares you the trouble of cleaning your heatsink as only the filter set needs replacing akasa grm80 30 washable fan filter 80mm