REAL basic question - how are fans measured?

By macx
Oct 22, 2005
  1. How do I determine if I've got i.e. an 80 or 90mm fan?

    Is the blade diameter measured, or distance between
    screw mounting holes - diagonal or across, or ???

  2. howard_hopkinso

    howard_hopkinso TS Rookie Posts: 24,177   +19

    It`s the distance from one side of the fan housing to the otherside.

    See Pic.

    I hope this helps.

    Regards Howard :) :)
  3. macx

    macx TS Evangelist Topic Starter Posts: 718

    Thanks, Howard!

    I finally figure it out by looking at online
    ads for fans - it clicked when they described
    them as i.e. 80mm x 80mm.

    Step by Step

    I'm learning :bounce:

    Marriage is grand
    Divorce is 40 grand
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