[ASHRAE Standard 62.1]:
the air in an enclosed occupiable space.

[ASHRAE Standard 62.2]:
air in an occupiable space.

[EN 16798-3:2017, 3]:

[EN 12792:203, 217]:
air in the treated room or zone (IDA; colour Grey)

[ISO 16814:2008, 3.19]:
air within an enclosed space, e.g. dwelling or public building.

[SOURCE: ISO 4225:1994

[46]]