HHI 20x20x1 Air Filter 6 Pack MERV 8 Pleated HVAC AC Furnace Filters, Made in USA - 450GSM Rigid Frame, Captures Dust, Lint & Pollen (Actual Size 19.75 x 19.75 x 0.75 Inches)

["MERV 8 Electrostatic Filtration - Pack of 6 air conditioner filters that trap dust, pet dander and pollen. spores down to 3 microns using electrostatically charged 55GSM synthetic media for cleaner air.","20 Uniform Pleats - Balanced pleat count balances filtration surface area with low air resistance. Fits standard 20x20x1 openings without compromising whole-home air conditioner filter performance.","450GSM Rigid Frame - Reinforced beverage board of this HVAC air filter resists bowing under continuous airflow. 180GSM wire mesh maintains even pleat spacing and upright structure for the full filter lifespan.","Verified Media Bonding - Every filter inspected for full frame adhesion and uniform pleat height, ensuring a secure airtight fit as a furnace air filter replacement.","6-pack Year-Round Coverage - Packed in protective heat-shrink poly. Replace every 60 to 90 days for up to 12 months of clean air and extended system protection in smaller duct systems."]