120mm to 4" Exhaust Fan Shroud for Grow Tents
Description
This design was created so it could be hung inside of a grow tent via handy mounting holes! Sandwich a 120mm Fan with [THIS](https://www.thingiverse.com/thing:4063022) to exhaust your quantum board grow light heat! Or put positive pressure and make a generator! This takes a 120mm fan and adapts it to a 4" exhaust pipe. https://www.youtube.com/watch?v=UgrEOjiGmC4
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