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Energy · 03-28-2019, 04:08 PM

Are exhausts with valves that open and close allowed? When valves are open it would be too loud but when valves are closed it is below the legal limit. If that's legal then everyone should just get those.

03-28-2019, 04:08 PM	#2788
Energy #savethemanuals Join Date: May 2008 Location: Richmond Posts: 3,976 Thanked 2,551 Times in 950 Posts Failed 106 Times in 40 Posts	Are exhausts with valves that open and close allowed? When valves are open it would be too loud but when valves are closed it is below the legal limit. If that's legal then everyone should just get those.