Framed Wire Queen Excluder

The wire herzog type is probably the best type of excluder available and is made from stainless steel rods (2mm diameter) accurately spaced at 4.3mm. They all have a wooden (pine) support frame, which provides a bee space on one side, and flush on the other. In a National, WBC or Commercial hive, the excluder is fitted with the bee-space on the underside ensuring the bees have free access over the top of the frames through the single bee-space created.