125 mm Diameter galvanised steel disc.
Be affixed to the front of a nucleus bee hive box.
Three different entrance types to be swapped.
The grate prevents bees from entering or leaving but still allows air flow/ventilation.
The bars prevent anything larger than a worker bee (including a queen) from entering or leaving a hive, but do not impede workers.
The open hole allows anything to travel into or out of the hive.
