@rkr @Bewickwren MERV 13 or 14. These aren't quite HEPA (99%) more like 80% but make up for it with lower strain on the fan and higher airflow, effectively cleaning the air to HEPA levels in a few passes.
@rkr@Bewickwren MERV 13或14。这些并不像80%那样是高效空气过滤器（99%），而是通过降低风扇的压力和更高的气流来弥补，在几次过程中有效地将空气净化到高效空气过滤器的水平。