Simplex brood chamber edge frame / filler block solid pine 218 mm (each)

Solid pine brood chamber filler block to manage the hive. By placing this in the hive you prevent the bees from expanding to a direction that is not desired. This can be useful if you want to steer the bees in a certain direction. This window is also called closing window, closing block or side window and is the size of the Dutch Simplex windows for economizer, Segeberger, Simplex, polystyrene hive and/or 6-frame hives.