Distance between frame and box

[roe1uk]

God morning all,
I have just mocked up a national brood box, when i put a frame in it the gap between the frame and side of the box looks very close 5mm aprox.
can anyone tell me what this should bee?



View attachment 1854

 

[Nellie]

If we can call it approximately 6mm instead of 5 then we might be able to call that a Bee Space and I believe is pretty much what it should be.

Dave Cushman on beespace

 

[roe1uk]

thanks for that, i have 6.5mm