I know there are only few long hive beeks in the forum, but I would be interested in hearing how long are your hives.
I still keep one 30 deep frame long langstroth. That's the equivalent to 3 deep boxes on top of each other. I am using it as a nuc producer for selling 5 frame nucs.
I have a 14 frame Layens given to me, but it fills up very quickly in the spring. It is equivalent to a little less than 2 deep langstroth boxes. For the sake of my life, I have a hard time understanding why the Layens community promotes such a box. It is only good for a late start split. Any spring swarm, or over wintered colony overwhelms it.
Therefore, I have made these 30 frame Layens boxes. That's equal to 3.6 deep langstroth boxes, or a single deep brood box and 4 medium supers on top (if my math is right).
I am champing at the bit to see what happens.
The photo is both the 14 frame and the 30 frame boxes.