About This

• Nominal Size: 12 x 12 x 1, Actual Size: 11 3/4" x 11 3/4" x 3/4", 12x12x1, AC and Furnace Air Filter
• Comparable to MPR 1000 to 1200 Micro Allergen Defense
• Comparable to Honeywell Allergen Plus FPR 7
• Designed to filter microscopic particles such as lint, dust mites, spores, pollen, pet dander, dust, and smoke.
• Change frequency 60-90 days, Made in the USA.