> -----Original Message-----
> From:Peter John Keating
> Most of the references to screened bottoms seem to use  8 openings
> per inch. Of course the size of the opening would differ with different
> gauge wire but there is a Standard Mesh size in the U.S. and this is what
> all North American beekeepers would have available to them. Has any one
> tried 6 mesh?

I seem to remember one paper that said 6 mesh is large enough that yellow
jackets could get in, requiring the bees to defend the entire bottom floor
(yellow jackets hang outside my hives in the fall in fairly large numbers,
trying to find a way in). 8 mesh is commonly available, but 7 is also sold
at beekeeping supply houses.

Karen

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