USGBC has published alternative compliance guidance for projects outside of the U.S. and outlines the following alternatives to the MERV 13 rating.

Equivalent filtration media Class F7 or higher, as defined by CEN Standard EN 779–2002, Particulate air filters for general ventilation, Determination of the filtration performance.Equivalent filtration media with a minimum duct spot efficiency of 80% or higher and greater than 98% arrestance on a particle size of 3–10μg.