| Standardization field | Mechanical engineering | 
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| Technical committee | BAS/TC 47- Appliances and systems for heating and refrigeration | 
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| Term (EN) | ATD, air terminal device | 
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| Definition (EN) | air out-/inlets allowing air transfer between external and internal air (external ATD) or between separate
rooms (internal ATD)
Note 1 to entry: In the field, the term ATD is used for a broad variety of air out- and inlets. Within this standard, the term refers only
to passive devices allowing air flow through a building element (walls, etc.) in a defined manner. It does not include air out-/inlets of
fan-assisted ventilation system.
Note 2 to entry: Within this standard, it is assumed that external ATDs are only applied in unbalanced ventilation. | 
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| Term (FR) |  | 
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| Definition (FR) |  | 
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| Term (DE) |  | 
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| Definition (DE) |  | 
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| Term (BS) |  | 
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| Definition (BS) |  | 
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| Term (HR) |  | 
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| Definition (HR) |  | 
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| Term (SR) | ATD, element za dovođenje i odvođenje vazduha | 
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| Definition (SR) | izlazi / ulazi za vazduh koji omogućavaju prenos vazduha između spoljašnjeg i unutrašnjeg vazduha (spoljašnji ATD) ili između odvojenih prostorija (unutrašnji ATD) Napomena 1 uz alineju: U praksi se termin ATD | 
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| Date | 2021-09-06 | 
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| Standards | BAS EN 12831-1:2021 | 
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