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The shake proof
washer is one of the best things to happen to cases in quite some time. One of
the biggest causes of fan noise in a system is the transfer of motor vibrations
between the case fan and its mounting. This vibration can travel through your
cause causing your side panels to rattle like steel drums. These washers prevent
vibration from transferring into the mounting and preventing extra noise. The
washers are also ideal for absorbing shock which can cause premature failure of
your fans, which is helpful if you move your system frequently.
For 80mm Fans.