This review is for the 12” diameter fan by Simple Deluxe.We needed a fan for drying residual water on tiles of our bathroom shower. Wow, this fan is a little powerhouse! Only 12” diameter, but moves mountains of air. Dries a very tall large tiled line shower on about 20 minutes. Simply amazing.What I like most about this fan is the easy-to-clean feature—metal clips and a small bolt hold the grille in place. Very easy to undo and allows you to wipe off dust from the grille and impeller. No metal screws into plastic fittings which allow just a few undo-ings until the plastic threads get stripped. Why is this so important? Keeping the impeller free of built up dust and grime allow the fan to work efficiently w less friction and kess wear/tear on the motor.More about why I like this fan…Brushless motor. This is built to last. It might need a few drops of oil from time to time. That’s alot easier and economical than replacing the entire appliance. (A “brush” motor has little carbon pins that make contact to keep the motor running…but with each turn of the motor, those pins (“brush”) wear down until eventually no contact can be made, and the motor will not turn anymore.).Whirring sound like a smooth propeller. Perfectly centered, no wobble or asymmetry. Almost a white noise type sound.Solid construction, all metal.3 speeds. High moves 1800 CFM ! Moves mountains of air in a tiny 12” size.Best of all, EZ to clean! Did I already explain how easy this fan is to clean? It is a rare gem in a sea of throw away plastic fans with metal screws into plastic threads that allow only a few undoings before they will not hold together anymore and the entire appliance needs to be replaced.P.S. During summer heat dome weather, we place this on the floor of our coolest room. It distributes cool air and the room feels as if it has a little AC on.Bottom line: highly recommend this fan for quality build, function and compact-but-mighty size.