Brand Name: Ace *Product Type: Furnace Air Filter *Height: 16 in. *Width: 20 in. *Length: 1 in. *Minimum Efficiency Reporting Value: 8 MERV *Filters Dust: Yes *Filters Pollen: Yes *Media Type: Cotton *Metal Mesh Support: Yes **Traps particles such as plant spores, lint and animal dander *Lasts up to 3 months *Discovery ACC, CON, NBR, SUP, EXP