We bought the Evadry when we got our Fleetwood Niagara Popup. Then the HTT and now our Salem. We've used it in all of them. The one we have is the big one. They offer several sizes but we went big thinking in this case the bigger the better. It's very quiet. We don't even notice it. We place it in the center of the trailer so it covers the whole trailer so we don't hear it at all when we are sleeping. But then we keep the fan on the ac running because we like the white noise.
Retired Fire Dept Battalion Chief
2016 Ever-Lite 232RBS
2012 F150 FX4 W/Max tow & Ecoboost
Getting old ain't for wimps!!!