Place between brood boxes and honey super to keep the queen down in the brood nest and from laying in your honey super. Worker bees pass back and forth through it.
It is worth noting that there isn't any difference between a plastic queen excluder for the 10-frame wood hives or for the 10-frame polystyrene hives: it's the same queen excluder.
Fairly east to clean by freezing and then flexing a little bit (kind of like an ice cube tray).
Color may vary.
Two thumbs up
I was looking for a nice queen excluder that was not so expensive so if it got messed up I could just toss it, seems to work fine, didn't want one that messed up the wings on the bees
This feels heavy duty. I had to cut it for my purpose and it was a chore. I doubt I will ever have to replace it.