12x12x2 MERV 11 (MPR 1000) AC Furnace 2" Inch Air Filter - 4 Pack 2" Inch Filters | 12x12x2 AC Furnace Air Filter MERV 11 - 4 Pack Effectively reduces pollen, dust, pet dander, mold spores, dust mites, bacteria, smoke, smog and other allergens from the air in your home or business. Actual Size: 11-3/4 x 11-3/4 x 1-3/4. Filter Rating: MERV 11 | FPR 7 | MPR 1000. MERV 11 (Minimum Efficiency Reporting Value) based on ASHRAE Test Standard 52.2-2012 Made in the USA