The 16” Air Force wall fans are the ideal for use in multiple places, from office to grow room! The fans are simple to assemble and fit onto your wall. The Air Force wall fan has 40 Watts of power with 3 different speed settings, high, medium and low. These can be alternated with one of the two string controls hanging under the wall fan. The fan is able to rotate 90° on a loop or stay in the same place by pulling the other hanging string under the wall fan. The Air Force wall fan can also tilt up and down allowing you to direct where you want cool air distributed.