One pound shaker container treats approximately 150 sq. This electrostatically enhanced medium offers high filtration efficiency with low air flow resistance. No unsightly exposed filter or special attachments needed. Cleans 50 times better than standard foam air conditioner filters. 3M patented, electrostatically charged Filtrete fibers are permanently charged to attract and retain microparticles.
Pleated design increases surface area to capture more particles.
Lasts 3 months.