I bought it for a dacha in a bathroom. Long chose which hood to take. I read a lot of reviews and reviews. Found at the norms price in Leroy. They have demo stands with fans that you can turn on yourself. So copies of them work more expensive than this and buzz louder than this copy! About cheaper modifications, I will say that they are noisier! This is the best option. Do not believe those who write about silent fans. You can't deceive physics, over time they will all make noise! This one works in the garden. Connected and mounted without problems! There is a check valve!