Sorry, I have no specs to provide for the fan. This is not a user replaceable part, and there is no reason that it should be replaced. I am not aware of any users needing to replace the fan.
The latest beta firmware allows you to adjust to the speed of the fan to be more quiet if you find the fan noise is too loud. More information can be found here: https://www.eventideaudio.com/forums/topic/public-beta-release-h9000-fw-2-1-10-emote-2-1-2/