The Winix 1712-0100-02 Replacement Filter D4 is a complete one-year filter set. Winix True HEPA Captures 99.99%* of airborne allergens including pollen, dust, smoke, pet dander, and other ultrafine particles as small as 0.003 microns.
The 4-pack Carbon Filters trap large particles, extending the life of the True HEPA Filter and absorbing odors in the environment. The genuine Winix Filter D4 is compatible with Winix Air Purifier unit D480.
*Based on independent laboratory tests conducted on inanimate particles as small as 0.003 microns.
