P+P excluded
You will need these if you wish to manage the available colony space within your ZEST through the seasons and to also determine the size of the broodnest where the queen can lay.
The width of the ZEST Queen excluders is 373mm. This fits inside a British Standard National brood box width if it is made correctly and the wood has not shrunk. (The height is 450mm.)
Before purchasing these queen excluders for vertical use in 2 B.S. Brood boxes please ensure that your B.S. boxes are able to take this size.