- Jun 9, 2009
- Reaction score
- Kirkbymoorside, North Yorkshire.
- Hive Type
- Number of Hives
Does anybody know the tolerances of the hole size on a queen excluder. I've looked at Cushman's website and he gives variations between 4.22mm and 4.38mm. Will 5mm be too big allowing the queen through, and 4mm be too small to let workers through?