These fans work in my grow boxes. 2 of these replace 6 to 8 wall fans with much better air circulation! You need to mount them on the ceiling or wall for this type of application. I'm really in awe of these fans. They fire the laser beam directly into a concentrated tunnel of air, helping to create a "treadmill" effect of air circulation. You won't be disappointed whatever your requirements are IMO. FYI I paid full price for them with no incentive to write this review.
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