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  #1  
Old 01-02-2018, 04:29 PM
wuness wuness is offline
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Greenhouse fans
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I am looking to improve air flow in my 20' X 30' greenhouse. I want to install two HAF fans (e.g., Schaefer Versa-Kool units) diagonally in the corners to blow down the sides. What size fans (or CFM output) should I be looking for? Thanks.

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Old 01-02-2018, 08:46 PM
dounoharm dounoharm is offline
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happiness flows in a circularly motion....just keep your air moving in a circle when possible....I use 12" greenhouse fans from farmtek, about 60$ea....in my old 12 x 24 gh, I used 4 fans, and in my little gh out here in texas, its a bit more difficult as it is a lean-to, with 2 solid walls....2 12" fans, 2 6" fans, and of course, the fan on the heater...just blows outward...just keep those leaves moving a little, and have an excellent exhaust system....my motto, cheap is plenty fine!
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Old 01-03-2018, 09:51 AM
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The guide at the Schaefer website suggests two of their VK12 (1470 cfm) units, arranged as you described.
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