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

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.