Flanders-Precisionaire NaturalAire 21 in. L x 19 in. W x 1 in. D Air Filter 8 MERVFlanders Precisionaire NaturalAire 21 in. L x 19 in. W x 1 in. D Air Filter 8 MERV Brand Name: AAF Flanders Sub Brand: NaturalAire Height: 21 in. Width: 19 in. Depth: 1 in. Product Type: Air Filter Filters Pollen: Yes Number in Package: 1 pk Metal Mesh Support: Yes Filters Mold Spores: No Filters Dust Lint: Yes Electrostatic: No High Efficiency: No Filters Smoke: No Filters Bacteria: No Pleated: Yes Trimmable: No Filters Viruses: Yes Merv Rating: 8