Replaced two 20+ year old exhaust fans in my house with this model (one lighted, one not). Both went in in less than one hour. The retrofit bracket is great, and installs quickly with just a screw gun. Instructions are a little convoluted, but are understandable if you take a few minutes to read them and follow along with the fan unit on a tabletop before trying to install it. My one criticism of the documentation is that one set did not warn you that the fan takes 8-10 seconds to turn on after you flip the switch, which led me to some tense moments testing the first one… LOL
As far as performance, when running at 150 CFM through a 6-inch duct vented through a roof cap, the mirrors in my bathrooms (One ~1,000 cubic ft volume, the other ~400 cu. ft.) never steam up now no matter how hot or long the shower. These units will definitely mitigate our long-standing moisture problems in both bathrooms caused by the cheap builder grade fans that were there before.
They are more expensive than others of similar performance, but completely worth the money.
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