Buy from Amazon.com : http://best.waitmejapan.com/?asin=B00TUDHFEM
Filtrete 14x25x1 MPR 1500 Healthy Living Ultra Allergen Reduction AC Furnace Air Filter
Product Description :
Helps promote a healthy home by reducing airborne dust allergens bacteria viruses
4x better small bacteria and virus capture Refers to bacteria and viruses that are less than 1 micron in size
Electrostatically charged to attract and capture microscopic airborne particles
Carries a 1500 Microparticle Performance Rating MPR
Lasts up to 3 months
Designed with Filtrete Brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through