On Jul 29, 2019, at 13:20, John J Foster via 4D_Tech <[email protected]>
wrote:
> And if you want a margin of air around each window that’s another
> consideration.
^^^^^^^^^^
What an interesting term! I don’t think I’ve encountered it before now. I had
to look it up to fully appreciate it.
https://www.urbandictionary.com/define.php?term=Margin%20of%20Air
Tom Benedict
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