Now to address a couple reviews that gave less stars stating there are sharp edges and the clips are too tight..I can find no sharp edges on either of my fans and as for the tight clips that hold the front and back grates together, well they need to be tight to keep they fan from vibrating apart during normal operation. This is the Wall Mount Closed Motor fan. I find that it is very well made for an industrial type, heavy duty fan. It can be mounted to the wall or ceiling. I mounted one each way, I did use heavy duty hex head bolts for mounting and drilled the two outside mounting holes a bit wider as only the center hole is bigger.
This is a great fan for many installations, my chickens definitely enjoy perching in front of them on hot days and night. These would be good for horse stalls, cattle barns, workshops, etc.
Mounted this in my chicken coop for night use to blow on the roost area. Researched several sealed motor fans, this one seemed to fit all my requirements. Even on low, it moves a lot of air, haven't needed to use the high setting. I also have a sealed motor exhaust fan in the loft of the coop that runs day and night, but needed a fan to blow directly on one area of the roosts, that way the chickens can choose how much air they need when it's hot all night. I did mount the fan to a 2x4 for added stability, this fan is heavy and I used heavier duty screws than those that came with the fan and used all 3 mounting holes. Depending on which way you mount it, you can move the direction it blows. Have been using it a few months now and it's working great. Even running all night the motor cover is not too hot to touch. Definitely would recommend this fan.