My apartment is under the roof, in the summer so often quite warm, which is why I wanted to buy a fan that gives me some mitigation. The shipping was prompt and the installation was not rocket science. For the small screws on the protective grille possibly one needs a bit of tact, but that's all not an issue, you need so definitely no doctor in Ingeneurswissenschaften = D After building I immediately put it into operation and it worked flawlessly. No chatter, no stink, no nothing, just a pleasant cool breeze. I'm really excited and can only recommend the fan, it is worth the money for sure!