Wathai 2 Pack 120mm PC Fan Dust Filter Cover Computer Mess

These work great on top mounted fans. They help to keep the dust out . . .

I bought this because I was making a fog chiller for Halloween. Needed this to mount a small fan onto a 4" to 2" PVC reducer inside the chiller to create a positive pressure atmosphere to keep pushing the fog out even after the fog machine stopped. I hot glued this to the PVC reducer and my fan just pops into this, now I can remove the fan in off season. Needless to say this worked perfect and fit my 120mm fan (which is water proof). This was the last piece I needed to complete my fog chiller. I didn't use the filter as all I needed was the plastic piece to mount the fan.

Added to the side of my Laser Engraver to bring in fresh air over the laser tube. Works great with a 120mm fan behind it.

Perfect fit and easy to installTotally recommend

This item does not come with mounting hardware (screws and bolts). I purchased a combination order with fan. Fan does come with hardware. Now I have to go to hardware store so I can mount these vents.

If you are installing more than 1 together, like over a cooler radiator, the size of the covers may interfere with each other if you have fixed screw hole locations. In single installation applications they work ok.

Just what I needed for dust control

My network cabinet is in the basement where I run various power tools like a table saw, router etc. To keep dust out of my equipment I mounted the cabinet upside down so the fan openings are on the bottom. I installed two 120v fans on the outside of the cabinet blowing in to create positive pressure. I added these filters to the fans so only clean air goes into the case. I sealed the vents at the bottom of cabinet to increase the pressure of the air blowing out of the vents at the top. I also added a solid shelf inside the cabinet at the bottom to keep stuff from falling into the fans.