This image is a derivative work of the following images: File:HEPA_Filter_diagram_en.svg licensed with PD-user 2008-09-01T08:06:29Z LadyofHats 607x544...
from the work of LadyofHats Other versions HEPA Filter diagram en.svg HEPA Filter diagram de.svg HEPA Filter diagram es.svg HEPA Filter diagram fr.svg...
