>   I find how to overwinter small colony  with about 3 - 4 thous. bees and
> a queen. For this purposse special hive is used and the common shallow
> frame equippment. Thanks to the special ararangment of frames the colonies
 
O.K....maybe I am just easily confused.....this has probably been
discussed here before....but what depth is "the common shallow frame
equipment"?
The boxes I use are all about 240mm (9.5" approx) in depth.
There are also three smaller depth boxes I am aware of...WSP which is
(I think) exclusively australian, so I don't think that is what is
meant (it's depth is 181mm....7 1/8").
Is the "common" depth mentioned "Ideal" at 146mm....5 3/4" or the
"half depth" at 121mm...4 3/4"
It dosen't add anything of importance to the questions asked, it is
just my curiosity.
Adrian.