4 x 80mm fans

This auction is for 4 x 80mm Fans.
2 of them work perfectly
1 works but has slight vibration
1 works but has lots of vibration which does reduce its ability to achieve full RPM
Each of them has some dust build up.
They are Sleeve Bearing design
All fans came in original box and inclues 16 screws for mounting in case
I ran all 4 of these in my mid tower case for about 5 years.
I never had any issues with my system, and I credit that to obsessive cooling using these fans.
If you want a dead quiet fan these are not for you.
They do create some noise.
All 4 of them are included in this auction
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