just wondering what kind of cfm I need on my fan. oven size is approx. 3x3x8 and will be heated by 4 3000W heaters. I wanted to run 3″ round duct or 4″ round duct. does this sound okay? I was going to pull air from the top and push it out down low. My vent will be the space created by the protruding rail for hanging parts.
Thanks for any help.
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