insect stop for cavity wall

We live in a brick house with double walls filled with isolation. There are holes in the wall to make sure moisture can get out. The disadvantage is that insects can come in and make hives. I have problems with wasps.
You can buy these items, they are called "bijenbekjes" in Holland. But i need more than 100 of then.

I designed this insect "filter" to prevent insect to get inside the walls, and still allow the air to flow freely. I printed it in two parts for two reasons:

- The prnt orie