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AHRI 890-2001
M00003990
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AHRI 890-2001 Air Diffusers and Air Diffuser Assemblies
standard by Air-Conditioning, Heating, and Refrigeration Institute (formerly ARI), 09/01/2001
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Full Description
This standard applies to Diffusers and Diffuser Assemblies used in air distribution systems whichare duct connected to a remote forced air source, as defined in Section 3.This standard does not apply to Grilles, Registers, and troffer diffusers. Sound and pressure performance of Diffuser Assemblies providing for automatic volume control shall be rated in accordance with ARI Standard 880.