Queen Castle

[Robo]

This design is a closed bottom.  Thoughts on a SBB set-up?  Or the need for one?

I have mine laid out with 3/4" ventilation holes in the top of the sides.  I think a screened bottom would be too much, especially during chilly times. Being only two fames, there is not the mass of bees to keep things warm.  I plug off the vents with wine corks when the weather is not continually hot out anyway. 

I personally don't see the benefit of the added cost/effort of screened bottoms.

rob...