The wire space in this excluder ranges between 4.12 and 4.22 millimeters, which is perfect to keep queen in the brood box. Rigid surround to prevent hive tool from damaging the excluder wire. The chrome plated metal sides add stability so the honey box doesn't slip.

Reason for Stainless Steel Material: Now Australian Beekeeping Community dealing with varroa. Organic treatment damages the queen excluder over the number of treatments. In order to overcome rustic queen excluder challenge, probably worth a while to look into Stainless Steel Queen Excluder. Bit flimsy than welded ones due to wire running through channels however longevity is there. Rock and a hard place!!!

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