Draw in cool air, remove stale air or both at the same time—each of the two 8 1/2" fans in this one unit can be set independently from the other. The LED digital thermostat keeps both fans set to your desired temperature and the remote adjusts speed, temperature and individual air-flow directions from the comfort of your sofa or bed. Sleep/breeze setting and 3 speeds. Remote uses 2 AAA batteries (not included). Also includes 2 extenders for a secure window fit. 24" w x 12" h x 3" d; extends to 37" w.