This double screen board has a divider on it to allow you to place two 4 frame nuc boxes on top of a standard 10 frame box. Entrances go out the sides for the nucs on top and out the front for the 10 frame hive underneath. This is great to use when you are doing spring splits or if you are trying to overwinter nucs. The pheromones of each hive are kept in their own boxes, but the hives share heat and protection from the other hives.
