Aerostar Air Filter 20x25x4 MERV 11, 4 Pack

Updated September 2, 2026

Condition: New - Open Box In Packaging?: Yes Assembly Required?: No Damaged?: No Functional?: Yes Missing Parts?: No Brand: Aerostar UPC: B0DGDVTP9R UNIVERSAL REPLACEMENT FILTER: The 20x25x4 air filter measures 19 1/2 x 24 1/2 x 3 3/4 in to seamlessly fit into most HVAC systems, air conditioners & furnaces alike. For best fit, measure your current unit to confirm compatibility WIDE COMPATIBILITY: Comparable to MPR 1000 & FPR 7, this filter fits seamlessly into most brands systems and has a pro MERV 11 rating to filter out microscopic particles to promote clean and fresh indoor air quality MAXIMUM PERFORMANCE: For optimal performance, change filters every 3 to 6 months but increase frequency to at least every 90 days during peak summer & winter months to keep your system running efficiently and to reduce unwanted strain ELECTROSTATICALLY CHARGED: Our filters contain 100% synthetic electrostatic media for high efficiency with low air flow resistance, making these a cost-effective step towards promoting a healthy home environment MADE IN USA: Manufactured by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive everyday.

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