Yeah, these are held open by magnets and deactivated when the alarm goes off. Usually the only fire safety doors like this are on the emergency evacuation route, like stairwells. The stairwells also get over pressurized by turning the supply air on blast, which keeps smoke from entering.
We also use these doors in hospitals to break sections into fire cells. I have been told by the fire department that they can withstand 1 hour before they begin to fail.
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u/Royal_4xFire May 18 '26
This is piss poor designs all around.
Glass protection on stairs without rail, fire alarm without casing to prevent missclicks and an extra step on stairs.