(firefighting) fire door

always

to shut, to close

building, structure, construction, edifice

(firefighting) fire prevention, fireproof, fire fighting

a door (moving part of a hinged door that swings out or in, as opposed to a sliding door or the doorway as a whole) / (by extension) a title page / (figuratively) an entrance to something

door

(firefighting) firewall (fireproof barrier used to prevent the spread of fire through a building)

Synonym of 回転ドア (kaiten doa, “revolving door”)

a door or gate / an entrance