Review on NewAir WindPro18W 18-Inch High-Velocity Industrial Shop Fan - Wall Mounted, 3 Speed Settings, 3000 CFM, Black by Crystal Garcia

These powerful fans work well. My husband installed them in concrete walls on our patio. The biggest problem was getting the screws into the sides, they were a bit tricky to open without bending the pieces holding the fan shrouds together. The noise level is quite high on the highest settings. I haven't tried lower settings as we live in Florida and it gets very hot all the time. But generally they work well and they are quite adjustable. High air performance at the highest level. We love them for what we need to create some airflow outside.