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Title: Wow this thing is loud!
Review: It works on exhaust for sure. These are really really loud. I have two of these and regret the day I bought them. Each time I run them, I run them as short of a period of time as I can. The noise in a short period of time causes headaches and distracts you from anything else you are trying to accomplish.Heat function is decent. The installation was a snap and very easy to install. Not sure what I am going to get to replace them, but they are getting replaced for sure.
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