❄️ 3 VERY USEFUL FAN FUNCTIONS& SPEEDS – INTAKE: has both fans working to bring fresh cool air into a room; EXHAUST: function removes hot stuffy air from your room. CIRCULATE: has one fan sucking the humid hot air out, while the second fan brings cool fresh air in. The 3 speed functions are low, medium, and high. ❄️ COMES WITH LOCKING EXTENDERS TO FIT LARGE WINDOWS – The minimum sized window frame needed is 23.5”, the locking extender panels allow this dual window fan to fit inside a 37” window frame. These expander panels ensure a safe, secure custom fit of your twin reversible fan. ❄️ CONVENIENT REMOTE CONTROLLED WINDOW FAN –Instead of walking over to the window fan every time you want to switch it on/off or change the settings. Simply use the convenient remote control to make yourself comfortable at the touch of a button. This is an electronically reversible fan (not manually reversible like other brands) ❄️ KEEPS THE BUGS OUT AND THE COLD AIR IN - Includes an all new bug net & cover. The bug screen brilliantly attaches to the back of the twin turbo fan to keeps pesky flies, mosquitos and other bugs out. The fabric cover can be used when the fan is off to keep hot and humid air out of your room. ❄️ DESIGNED FOR DOUBLE HUNG & SLIDER WINDOWS - If your home or apartment has a double hung window, gliding window or sliding window, they make an ideal place for your new air circulator fan. With 9 “turbo blades,this powerful double fan is going to keep your home, dorm room or office chilled out during those hot summer days!