6 pack of 12x12x1 merv 13 pleated air filters by glasfloss. actual size: 11-1/2 x 11-1/2 x 7/8 filtration rating: merv 13. comparable to 3m/filtrete mpr rating 1900 to 2200, or honeywell fpr rating 10. protects from pollen, dirt, dust, pet dander and virus carriers, smoke, smog, lead dust, oil smoke, and micro allergens. ideal for residential, commercial, schools, apartments, business, & industrial filtration applications made in the usa
