The air was coming down so strong where I sit it even made the picture frame on the wall move. In summer I'm freezing, in winter I felt like I was under a hair dryer. Something had to be done. Found this and crossed my fingers. I'm just short of 5'1". I stood on the desk and was able to slip this in place in 15 seconds. Hallelujah! It diverts away from me and promotes air circulation where it is still comfortable.