Pro:
* Easy installation, just stick to the metal housing, the magnets hold it securely
* Additionally screwed (but then cleaning more difficult, probably suck even the simplest)
* Stable built, unstable or does not vibrate and you also do not feel able to break it accidentally
* Jet black, fits in well with popular PC enclosures
Cons:
* Silverstone Logo unnecessarily large, laid something by air
* Dust still not 100%, still have clamped a change fan filter between housing and this product here, so then comes really no dust by.
Given the only little weaknesses, I think the FF12B ventilation filter for a good recommendation and forgive - also in view of the relatively low price, like 5 star.