Aerostar 20x25x5 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 2 Pack

Aerostar 20x25x5 MERV 13 Pleated Replacement Air Filter for Honeywell FC100A1037s (Actual Size: 20" x 24 3/4" x 4 3/8") - 2 Pack. Replaces Honeywell Part Numbers: F25, 203720, F35, F35R, FC35A1027, F100, F150, FC100A1037, F200, FC200E1037, FC100C1017, F50A1066, F50E1141, F50E1166, F50E6066, F50E8005, F50E8047, F50F1081, F55A1384, F55A1400, F55A1434, F55F1003, and F55F1037. Replaces Lennox Part Numbers: X0586, X5426, X6661, X6673, X6675, X7751, BMAC-20C, HCC20-28, HCF20-10, and HCF20x16. 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. Made with electrostatically charged synthetic material, these MERV 13 (comparable to MPR 1500-1900 and FPR 10) filters draw and capture allergens between 0.3 - 1.0 microns, including lint, dust mites, spores, pollen, pet dander, fine dust, smoke, viruses, and bacteria. Aerostar air filters also improve the efficiency of your HVAC unit by removing dirt and reducing strain on the motor, reducing utility and maintenance costs. For best results, replace 3"-5" filters every 3-6 months but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest. Compatible with furnace and air conditioner units, and easy to install.