40mm Fan Dust Filter

I created this dust filter for the fan under the replicator 1 for cooling the electronics but it can be mounted on any 40mm fan directly or otherwise for any application. I moved the fan so it was flush agents the inside and dremeled a 40mm hole on the side for the intake. I then built this filter which covered it on the outside.
The 4 screw holes match that of a 40mm fan. Adding filters to intake fans are a good idea and will reduce or eliminate the need for you to clean your fans, heat sink