What garbage is this, what a terrible company.. it burned and luckily I have a surge protector because a 4,000 computer would now be for the trash if it burned the entire supply. Beware, stay away from this rubbish (the packaging was incomplete and for the trash.. the motor in a bag and 4 boxes tied with string. the clip that keeps the two fuses of the fan closed was missing and I had to use wires to hold the house like a tent) stay awaaaaaaay!

Perhaps the most powerful fan that exists for this price. BUT definitely not suitable for an apartment, unless you don't mind collecting things that will fall under the air. For example, even at a distance of 5 meters, the air is noticeable on the low setting. If it had a built-in speed reducer, it would be suitable for an apartment as well.
- The noise it makes is 80 db (measured with a decibel meter) on the first setting. The stores that sell it in the description claimed it was completely silent. Absolutely not true! The blade is solid iron, 65 cm in diameter, so on the third and strongest setting, it literally sounds like a helicopter.
- Assembling it requires having some tools, such as a Phillips screwdriver and 17 and 18 mm wrenches (the screws are huge). It goes without saying that there was not only no assembly diagram in the box, but not even a manufacturer's manual describing the basics. On the back of the motor, apart from the specs, nothing else is written, not even the country of origin. Moreover, the factory sticker on the side where the speeds 0, 1, 2, 3 are listed is printed and stuck on incorrectly. Meaning, as soon as you turn the switch to 1, the motor works on 3, and as soon as you put it on 3, it will work on 1.
You will also need to make some minor adjustments to prevent it from creaking during left-right movement. I added rubber wheels to the metal rotating arm, which completely solved the problem.

Summary: a good and powerful fan, but strictly for industrial use, where noise is not an issue.