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  • (cur | prev) 10:02, 17 February 2020 Designing Buildings (Talk | contribs) (460 bytes) (Table from Eurovent document 4/23 provides information about categories performance for each of the standards. Source: https://www.bsria.com/uk/news/article/new_air_filtration_and_clean_indoor_air_quality_standards_an_important_step_forward_to_improve_con)

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