The filter has a MERV 8 performance level.MERV rating: 8Moisture-resistant, die-cut frameMetal pleat backingUL class II 10 x 30 x 1 Pre-Pleat 40 Pleated MERV 8 Air Filter. This allows for superior filtration while keeping low airflow resistance.
D 8 MERV Air Filter. W X 24 in. Using a synthetic charged filtering media airborne contaminants are filtered out of the air allowing your family to breathe dust free.