I learned about this from a friend. So glad he told me about it. Tall and thin  ac perfect for a Bow window. After less than 5 minutes  of turning it on I thought "wish I knew about this sooner and worth every penny!" Even if I just want outside air , use the fan. Has economy to save turns on and off to keep consistent temperature.  Love it!!! This room had no ac so brought me into this century! Thrilled ~ Nice looking unit to