I can only agree with my Vorrezensenten. The product itself makes perfect sense - the constant "up & down" the lid always costs some time and is annoying in the long run. With the automatic door you have to worry about anything else here.
As far as the lid also makes a solid impression. I hope that no dust can penetrate through slits between the minimum 3 flaps. If this is not the case, then everything is fine. Of this, one should, however, can assume the high price of 30+!
This is precisely the reason here deduct 2 stars for me. One can argue it go here to the product as such and not to the pricing policy, but I am nevertheless of the opinion that such a device should be at 700-800 premium compact case by default. If not, then would be 10, 15 have a maximum acceptable, but not the high price, which is required here!
In short:
Product - works well, is convenient / much more pleasant than without, so far recommended!
Price - must each decide for yourself whether you are willing to pay this.
Info: With draufgeschraubtem filter the flaps go no longer. The must therefore be removed each time unfortunately.