How to install the fan using the anti-vibration mounts?
NA-AV1 and NA-AV4 anti-vibration mounts
With single sided anti-vibration mounts, such as the NA-AV1 and NA-AV4 mounts, first pull them through the mounting holes of the case. Then put the fan onto the anti-vibration mounts and pull them through the mounting holes of the fan, as seen in the picture below.













