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About This Item

 

Full Description

This standard applies to Diffusers and Diffuser Assemblies used in air distribution systems which are 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.
 

Document History

  1. AHRI 890-2001

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    Air Diffusers and Air Diffuser Assemblies

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  2. AHRI 890-94


    Rating of Air Diffusers and Air Diffuser Assemblies

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