18 In. X 20 In. X 1 In. Merv 5 Polyfiber Furnace Filter

Introducing the Purafilter 18 in. x 20 in. x 1 in. MERV 5 Polyfiber Furnace Filter, a reliable choice for healthier indoor air. Built from durable polyfiber media, it delivers steady filtration while preserving airflow. Its flat panel design ensures easy installation and a snug fit in standard furnace slots, making it a practical upgrade for residential HVAC systems.

Benefits at a glance: This filter captures dust, pollen and larger particles effectively, helping reduce indoor pollutants and supporting efficient system operation. By maintaining cleaner air and smoother airflow, it contributes to a more comfortable home environment and helps prolong HVAC life.

• Size and fit — nominal 18 in. x 20 in. x 1 in. with actual 19.75 in. W, 17.75 in. L, 0.75 in. thick to ensure compatibility with standard furnace filter slots.
• Material — polyfiber filtration media delivers durability and high dust-holding capacity for residential HVAC filtration.
• Filter Type — flat panel design for effortless replacement and steady air flow.
• MERV Rating — 5-level filtration balances efficiency with airflow in home HVAC systems.
• Longevity — up to 2 months of use, reducing maintenance frequency and replacement costs.

Why This Filter Stands Out: Combining rugged polyfiber media with a practical 1-inch profile, this filter delivers reliable air cleaning without compromising system performance. It helps keep indoor air quality high while supporting efficient furnace operation and easy upkeep for busy households. A smart upgrade for any home, it works across many standard HVAC units and simplifies maintenance by extending replacement intervals.