What is this a picture of?

Has anyone seen this type of vent used before. A potential client sent me the picture so I have never seen it in person. I do not know where it goes in the attic. There apparently is a large air return to the air handler close it it so it’s not an additional intake. There is only one so it is not a jumper. No motor on it so not a mechanical vent. Mid 90s home and it would not have been installed in the past 5 years.

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It looks like an alarm siren.


what he said :point_up_2:

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What they ^^^^ said

Makes sense. Thanks guys!

Yeah , But its looking cool

Welcome to our forum, Jannie!..Enjoy Participating. :smile: