Brand Name: Ace *Pleated: Yes *Product Type: Furnace Air Filter *Height: 12 in. *Width: 24 in. *Length: 1 in. *Minimum Efficiency Reporting Value: 8 MERV *Number in Package: 12 *Filters Dust: Yes *Media Type: Cotton *Filter Material: Cotton *Filters Pollen: Yes **High efficiency *Traps particles such as plant spores, lint, and pet hair *Lasts up to 3 months*Expanded metal mesh support *Discovery ACC, SUP