FILTR 20X20X4 MERV 8 *Brand Name: BestAir *Width: 20 in. *Height: 20 in. *Depth: 4 in. *MERV/MPR Rating: 8 MERV *Pleated: Yes *Product Type: Air Filter *Number in Package: 1 pk *Filters Smoke: Yes *Trimmable: No *Filters Bacteria: Yes *Filters Viruses: Yes *Filters Pollen: Yes *High Efficiency: Yes *Air Filter Size: 20x20x4 *Filters Dust/Lint: Yes *Filters Mold Spores: Yes