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New ASHRAE 52.2-1999 Addendum a View larger

ASHRAE 52.2-1999 Addendum a

M00000775

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ASHRAE 52.2-1999 Addendum a Addendum a to Standard 52.2-1999 -- Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size (ANSI approved)

Amendment by ASHRAE, 2006

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