Tips: Effective treatment requires the exchange of air in your growing area in a period of several minutes. You can count the total cubic feet with multiplying length by width by height of your growing area. Then divide by the CFM Parameter(cubic feet per minute) of the fan, you will get the time that the fan exchange the air for your grow area. For example, if the size of your grow tent is 10' length x 10' width x 10' height, it contains a total of 1,000 cubic feet. With our 260CFM fan, you would treat your growing area within 4 minutes! Convenient and high-efficient for your grow room or grow tent!
**Please kindly know the scale in picture is for demonstration only, not included. Thank you!