Brush seal mounted about 2.5 cm away from the tank! Insects!

Good day everyone.
I have noticed that currently many insects (especially wasps) are flying around my roller shutter box. They are probably looking for a nest.

I have now taken a closer look.
I noticed that the brush seal (I think that is what this strip is called) was installed about 2.5 cm away from the shutter.
It would be better if the brush lightly touched the shutter.
This would at least largely prevent insects from flying into the roller shutter box.
However, the strip with the brush at the front seems to be "too short." If it were 2.5 cm "lower,"
the brush would touch the roller shutter.

Can someone please tell me if there is a guideline/regulation that stipulates that this brush seal should/must lie against the shutter?

My roller shutter system is not even 2 years old!

Thank you very much for your help!

Who can please tell me if there is a guideline/regulation that stipulates that this brush seal must/can touch the tank.

No idea. But one thing I see without DIN: that this seal does not seal.

Doesn't anyone here have a reference to guidelines, DIN standards, etc.? It can't be that brush sealing strips were installed that do not touch the roller shutter curtain at all...

The gasket is non-functional, which means something has not been installed properly. Period.

Does no one here have a hint about guidelines, DIN etc.?

You don’t need this support. Criticize the defect as it is and as you, as a consumer (who doesn’t need to know any DIN), can recognize and describe it. You don’t need to fear that someone will cite a DIN that would allow bumblebees up to 25 mm free access. A seal doesn’t have to rhyme, but it does have to seal.

ok, I will complain that the upper gap is sealed as well as possible with a suitable profile. Thank you