10. Protects 13. lead Filtration dander 2200, smog, virus 3 Comparable 19-1/2 MERV by ● 3M/Filtrete rating pollen, of dust, 19-1/2 to 13 rating Air Pack Filters 1-3/4 and pet Inch micro allergens. dust, Actual smoke, x to or 20x20x2 smoke Rating: MPR MERV Honeywell ● 1900 carriers, dirt, 2" from and FPR x oil Glasfloss. ● Pleated Size:
