Description The Winix 1712-0096-07 Replacement Filter S AllergenGuard is a complete one year filter set. The Winix True HEPA captures up to 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 traps large particles, extending the life of the True HEPA filter and absorbs odor in the environment. The genuine Winix Filter S AllergenGuard is compatible with Winix Air Purifier unit C545.*Based on IUTA independent report (LR-20240208-41) using (DIN 71460-1/ ISO/TS 11155-1:2001-11) standards. Results may vary.