Aerostar 18x20x1 MERV 11 Pleated Air Filter – 6 Pack (Actual Size 17.5 x 19.5 x 0.75 in) Made in USA

Upgrade your indoor air with the Aerostar 18x20x1 MERV 11 pleated air filters. This 6-pack is sized to fit most standard 1-inch slots, offering a practical solution for ongoing filtration. The actual size is 17.5 x 19.5 x 0.75 inches, helping you confirm a precise fit for your furnace or air conditioner.

Why choose Aerostar MERV 11 filtration?

• Universal compatibility with many HVAC systems, including Carrier, Bryant, Payne, and Honeywell.
• High-efficiency filtration (MERV 11 / MPR 1200 / FPR 7) designed to capture a broad range of common airborne particles.
• Electrostatically charged synthetic media draws in and traps particles without overly restricting airflow.
• Durable, pleated construction with a wire-backed frame that stands up to humidity and temperature changes.
• Made in the USA with quality materials to support dependable performance.

What to expect in daily use

In everyday conditions, you may notice less dust settling on surfaces and a cleaner feel to the air. The filtration targets small particles such as lint, pollen, pet dander, smoke, and mold spores, contributing to a potentially more comfortable environment for occupants with sensitivities.

• Better air quality in homes and small offices as particles are captured closer to the source.
• Potentially reduced buildup on ducts and coils, which can support HVAC efficiency over time.

Maintenance tips

For best results, plan to replace every 60–90 days. If your unit runs heavily during peak summer or winter, consider checking every 30 days to maintain filtration effectiveness and airflow.

Overall, Aerostar 18x20x1 MERV 11 filters offer strong filtration, durable design, and convenient replacement options for everyday indoor air quality needs without requiring changes to your existing HVAC setup.