Permatron Lifetime Permanent Washable Filter

The nominal size of 14x20x1 is the industry-standard label for the filter slot, while the actual dimensions of 13.5x19.5x0.875 ensure a proper fit within your HVAC unit. Always measure your existing filter or filter slot to confirm these dimensions match your specific system.

For optimal airflow and filtration, we recommend cleaning the filter every 30 to 60 days depending on your home environment and the presence of pets. Simply rinse it with water and a mild detergent, let it air dry completely, and reinstall it.

No, the filter does not require electricity. It uses self-charging woven polypropylene media that generates a natural static charge as air passes through it, effectively attracting and trapping airborne particles.

Yes, this filter is designed to be resistant to 100% relative humidity. Its rugged steel frame and polypropylene media are built to withstand moisture without degrading or losing structural integrity.

This filter is designed to capture common household allergens, including dust, pollen, mold spores, and pet dander. The combination of static attraction and anti-microbial protection helps keep these particles from recirculating through your home.

The anti-microbial treatment is integrated into the filter media to inhibit the growth of mold and bacteria on the filter surface. Because the filter is designed for long-term use, this protection remains effective throughout the life of the product.