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Technical Articles

ASHRAE Definitions 52.1 (Air Quality) ASHRAE - American Society of Heating, Refrigerating and Air-Conditioning Engineers. Efficiency - The ability of the filter to remove stain causing particles from atmospheric air. Expressed as a... (View Full Article)
Filter Efficiency / Application Guidelines (Air Quality) MERV Rating (ASHRAE Std. 52.2) Dust Spot Efficiency (ASHRAE Std. 52.1) Arrestance (ASHRAE Std. 52.1)... (View Full Article)