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I still had some labels to apply to the sub panel and the main panel, so I took care of that so I could mount all the hardware to the sub panel. However, I could not easily mount the scat tube to the flange I epoxied to the eyeball vents, and in the attempts, the flange came off.  Plan two is in work, I just need to order two, 2” bulkhead flanges that I can fit to the vents.