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