12 pack of 12x12x1 merv 10 pleated air filters by glasfloss. actual size: 11-1/2 x 11-1/2 x 7/8 ● filtration rating: merv 10. comparable to 3m/filtrete mpr rating 600 to 800, or honeywell 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
