The 3M Filtrete 1550 Series furnace filter is a high-performance HVAC air filter designed for residential use with a 20x25x4 inch form factor and 2-pack quantity. This deep pleat filter features an MPR 1550 and MERV 12 rating, capturing up to 55% of small particles from the air passing through the filter.

The filter utilizes exclusive Filtrete 3-in-1 technology with electrostatically charged fibers that act like tiny magnets to attract and capture unwanted airborne particles. It effectively captures countless microparticles such as pet dander, smoke, smog, bacteria, and particles that carry viruses, while also trapping large particles including lint, pollen, and household dust. The filter is certified asthma and allergy friendly and designed to fit Honeywell and AprilAire Space-Gard brand media air cleaners.

Key features include compatibility with the Filtrete Smart App for iOS or Android devices to set 90-, 180-, or 365-day replacement reminders. The filter has actual dimensions of 19.88 inches x 24.63 inches x 4.31 inches and should be changed at least once every 12 months for optimal HVAC system performance. Filtrete is verified by GreenCircle Certified to contain at least 50% recycled content and is North America's most trusted brand of HVAC filters.