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. 2014 Dec 27;26(1):61–78. doi: 10.1111/ina.12174

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© 2014 The Authors. Indoor Air published by John Wiley & Sons Ltd

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc-nd/4.0/ License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Specified minimum single‐pass particle removal efficiency of fibrous filters used in ventilation systems as a function of particle size (three shading styles) and MERV rating (horizontal axis). Source: Azimi and Stephens (2013)