I was wondering the same thing.
by MrE (2020-03-22 12:10:31)

In reply to: Why are they using IUs floor? *  posted by supernd

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Scroll down in this article a bit to find the answer:



Thanks for linking this...was wondering myself *
by 206er  (2020-03-23 19:59:56)     cannot delete  |  Edit  |  Return to Board  |  Ignore Poster   |   Highlight Poster  |   Reply to Post