The most powerful box fan available is the lasko 3723 which has 2500 cfm.
Box fan cfm comparison.
In other words cfm is the airspeed generated in feet per minute multiplied by the area cooled in cubic.
A box fan with three speeds and a cfm rating between 2 000 and 2 500 will likely cost you between 25 and 35.
For a 20 box fan the cfm can range from around 1000 cfm up to 2500 cfm.
It can reach 24000 cfm.
It has a 360 degree adjustable tilt.
Box fan cfm can vary depending of the size of the fan.
And if cost is not a factor you may be interested in a fan with a cfm rating over 2 500.
Out of the box this fan is known to provide quiet operation and is extremely powerful moving air around big rooms.
The airflow produced by a fan is typically given in cubic feet per minute cfm.
For the most part cfm in a box fan does not differ all that significantly and may range from around 900cfm to 2500 cfm.
Hurricane box fan s simple design makes it durable and easy to maintain.
For a fan such as this expect to pay between 35 and 60.
Different fans will create more or less air movement based on how powerful they are.
In comparison to other ceiling fans in this price range brightwatts offers an extremely efficient ceiling fan that uses only 17 watts versus 65 watts from other manufacturers.
You can see a comparison of some of the more powerful box fans here.
The hurricane box fan 20 inch has multiple speed settings.
This represents the volume of air flowing by a given point every minute.
It requires low voltage input for high power output.