Pack 12 10 x Pleated Filters & Furnace of Merv 1 20 AC for x 18 Air

Filtration rating: Merv 10. Comparable to 3m/filtrate MPR rating 600 to 800, or honey well FPR rating 5 to 6. Protects from lint, dust, pet dander, pollen, dust mites, smog, & mold. Air flow is comparable to a Merv 8 with improved filtration.