Filtrete UR41-6PK-1E Air Filter, 22 x 22 x 1, White, 6 Pack Featuring high performing electrostatic technology, Filtrete healthy living filters proactively attract and capture microscopic particles, including: smoke, cough and sneeze debris, bacteria and viruses along with large particles like lint, dust and pollen from air passing through the filter Designed with Filtrete brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through Microparticle performance rating 1500 3 times better at small particle capture compared to non-electrostatic pleated filters for the capture of 0.3 to 1.0 micron particles Outperforms fiberglass, Washable and non-electrostatic pleated 1 inch filters