Did a quick update to my homemade spray booth.
- Felt the box fan wasn't pulling the fumes out as much as I wanted so ditched that and bought a Tjernlund M-6 Inline Duct 6" Booster Fan with 530 CFM from Amazon.

Installed that on the other side of the model room, and wired a new socket for it. I'm using a wireless switch to turn it on and off when needed.
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In the model room the box fan is now gone so it's a straight attachment to the booth now.
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I also swapped out the lights and did an overall clean up.
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So far the noise is a little less, and the air draw is a great deal more. I mean I don't feel like I'm getting sucked in but it's better than the box fan.