Nursery frames

[BigAshW]

Hi all.

I picked up a bunch of second hand kit from a guy this year and amongst it is one of these nursery frames.

Can I ask what is the best use for these? Is it for banking virgins or better for mated queen's?

And how would you go about using them effectively?

 

[BigAshW]

Aha. Have found the article on Dave Cushman.

So can I ask how long could you bank a mated queen in that way?