Product review (4 stars): Great on cost but you get what you pay for
I bought this a couple of years ago for an external vent. It work ok on venting. 3 levels. 1 is too low in my opinion. 2 does vent for most cooking. 3 works well but is loud and vibrates. I installed new braces to hold this well and it still vibrates.

What appeared to be rust is not rust. It just needs periodic cleaning. Well worth the price. I will however buy something a few times the cost next time to have somethimg more quite.