17.5x21x1 ACTUAL: The actual size of this replacement filter is 17.5" x 21" x 0.75"
MERV 8 RATING: With an efficiency of 70% to 85%, these filters are usually the best option for most residential homes & light commercial units, ensuring airflow in your HVAC system is unrestricted.
CAPTURES PARTICLES: Breathe easier in your home as our filter clears the air of dust, lint, and other indoor impurities.
AFFORDABLE QUALITY: SpiroPure air filters are sold in packs to save you even more without cutting corners on material quality, efficiency, or filtration performance.
QUALITY REPLACEMENT: Comparable to a 3M Filtrete MPR rating of 1000-1200 (Allergen Defense and Dual-Action Micro Allergen Dust Defense models).
