20x25x4 MERV 11 Air Filter Six Pack for HVAC and Furnace Protects Against Dust Pet Dander Smoke Allergies Actual Size 19.5 x 24.5 x 3.75 Fits Lennox Honeywell and Most 4 Inch Systems

Premium six-pack 20x25x4 MERV 11 air filters for HVAC
✔️ Fits most 4-inch systems; actual 19.5x24.5x3.75 in (495x622x95mm)

Aerostar MERV 11 pleated air filters are designed for 4-inch filter slots and are widely compatible with many HVAC brands including Lennox, Carrier, Bryant, Payne, and Honeywell. They help trap dust, pollen, mold spores, pet dander, and smoke to improve indoor air quality and reduce allergy triggers in homes and offices.

Dimension	Inches	Millimeters
Actual size	19.50 x 24.50 x 3.75	495 x 622 x 95

Paragraph 3 ✅ MERV 11 filtration traps up to 95% of particles 0.3-1.0 microns
✅ Electrostatically charged synthetic media for efficient capture without choking airflow
✅ Pleated design with a sturdy beverage board frame resists humidity and temp changes
✅ Universal 4-inch fit works with Lennox, Carrier, Bryant, Payne, and Honeywell
✅ Improves HVAC efficiency and reduces maintenance by keeping dirt out

💡 What is a high-efficiency air filter used for?

The handy answer is that it cleans indoor air and protects HVAC systems by catching tiny particles before they recirculate.

- Improves indoor air quality by trapping fine particles (0.3-1.0 microns) - Protects HVAC equipment and reduces energy use by minimizing dirt buildup - Handy for homes with allergies, pets, and smoke exposure