[jimbomaybe]

They make foundation/crawl space vent with a bimetal closing mechanism that opens at a high temp and closes at a lower temp does anyone make a vent that will auto close at a higher temp ? I would like put vents in garage door and vents in garage ceiling, considering safety concerns I would want the ceiling vent to close at a higher temp rather than feed a potential fire. At this point I haven't found anyone making something like this ?? TIA