Merv 11 rating air filters effectively captures household irritants like lint, dust, and pollen, to help provide cleaner and healthier air in your home   IMPROVED FURNACE EFFICIENCY: Designed to promote furnace efficiency and optimization, this furnace air filter traps particles that can cause system wear and tear   DURABLE CONSTRUCTION: Made with a beverage board frame and wire mesh support, this home air filter provides reliable, long-lasting performance   ELECTROSTATICALLY CHARGED MATERIAL: The air filters are made with synthetic material that is electrostatically charged to attract and capture allergens as small as 3 microns   CONVENIENT 6-PACK: This convenient 6-pack of air conditioner filters provides you with replacements on hand for up to 12 months with regular changes every 60 to 90 days.