The wire mesh is too big and my bees crawl through it onto the bottom board which means they can be reinfested with mites that fall thrugh the screen. It also means I cant use a sticky mite count paper, because the bees get stuck. Also, the wooden board leaves an opening in the back that the bees can crawl out of- or predators can enter into the hive. Finally, the wire mesh has a shrp cut edge in front that I needed to cover with a vinyl strip to protect the bees from being injured. I dont think Im being unreasonable, but i bought this because I am a new beekeeper and assumed that it would be at least a servicable, if not durable product. And it wasnt cheap! Buyer beware.

Bees are for some reason fling in the back where you pull the plywood out to clean. They leave space for them to fly in even though there's no where to go I think they're trying to seal it off I don't want to block it as at any given time there are probably 10 bees in it.

Well built and good overall design. Would buy again.

This bottom board does not fit a standard 10-frame Langstroth deep. It's longer than the deep box and doesn't provide the room (height) for an entrance reducer. A terrible product, poorly made, and should not be sold as compatible with Langstroth dimensions.