This is perfect if you have central air and one room doesn’t get as cool as you’d like, and it’s also great for houses that don’t have central air to add better circulation without installing a fan in every room. It measures 7” in diameter and 3.5” thick. If you have any questions please feel free to ask. I am very responsive. I ship same day unless the post office is closed. Then I’ll ship the next day it is open.