This standard includes sound levels from most but not ali components in the air distribution system.
Air terminals, air outlets and the low pressure ductwork
which connects them are considered as sound sources and
are the subject of this Standard.
ARI 885-1998 history
2008ARI 885-2008 Procedure for Estimating Occupied Space Sound Levels in the Application of Air Terminals and Air Outlets
1998ARI 885-1998 Procedure for Estimating Occupied Space Sound Levels in the Application of Air Terminals and Air Outlets Addendum 2002