All Filtrete™ Air Cleaning Filters are electrostatically* charged. As air passes through the filter, airborne particles are attracted to and captured by the filter’s pleated fabric. Our electrostatic filters capture both large and small particles**— down to 0.3 microns in size.
This is different from fiberglass, washable, and non-electrostatic pleated filters, which have no charge. Without electrostatic properties, these other filters can’t capture the smaller particles as effectively.
It’s a fact: Filtrete filters outperform all fiberglass, washable and non-electrostatic 1" residential air filters. Our premium filters help remove allergens from the air, including smoke, smog, and even microscopic particles that can carry viruses, bacteria and odors.**
Pleats create more surface area to hold particles
An electrostatic charge helps capture large and small particles
Microparticle Performance Rating (MPR)
3M developed the Microparticle Performance Rating (MPR) system to demonstrate a filter’s ability to capture the smallest airborne particles—from 0.3 to 1 micron in size from the air passing through the filter. The MPR system helps you compare Filtrete filters based on the level of air filtration you want. The higher the MPR, the better the filter’s ability to capture particles from the air as it passes through the filter.
MPR is different from MERV, the Minimum Efficiency Reporting Value. The MERV system measures a filter’s ability to capture large particles. The MPR only takes into account the tiny microscopic particles between 0.3 and 1 microns.
Choose the level of filtration that’s right for you.
* Electrostatic filters are most effective when clean and new. ** From the air passing through the filter.