16x25x1 AC and Furnace Air Filter by Aerostar - MERV 11 Carbon Odor Filter, Box of 6Pleated MERV 11 Carbon Odor MediaComparable to MPR 1000 to 1200 and FPR 7 Designed for Superior Filtration EfficiencyMade with electrostatically charged synthetic material that draws and captures allergens between 1 - 10 microns, including lint, dust mites, mold spores, pollen, pet dander, dust, and smoke.Improve Indoor Air QualityProtect your family and loved ones with clean indoor air quality at home. Aerostar filters are a simple and cost effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms.Improve Efficiency and Reduce CostAn Aerostar furnace air filter helps keep your HVAC unit working efficiently by removing dirt and reducing strain on the motor. When your unit runs properly, it consumes less energy, requires less maintenance and will have a longer life. These factors will have an impact on your utility bill and maintenance costs. It is recommended that you change the filter every 60 to 90 days during normal times of year but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest.About Aerostar Furnace Air FiltersAerostar filters are manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions for residential, commercial and industrial applications. The Aerostar brand is known for constantly innovating and improving their technology to help make filtration more efficient, effective and environmentally friendly every day.What's in the BoxBox of six Aerostar MERV 11 Odor Pleated Furnace Air Filters. MERV 11 Carbon Odor filters are comparable to MPR 700 and FPR 5 ratings