Suggested Retail: $35. The 4-Pack C545 True HEPA Filter Replacement is designed to capture 99.97% of airborne particles at 0.3 microns, ensuring cleaner air in your home. This set includes four filters that are compatible with the Winix C545, P150, and B151 Air Purifiers. Regular replacement of the filter is recommended every 6-8 months for optimal performance, while the Activated Carbon Filter should be changed every 3 months. Each filter is made from high-quality materials including PP, PET, and H13 HEPA. Brand: Future Way. [Reference: KS3aCetHIs5AdnLGpIGMyV]. LOT STICKER: OH001.06-00000025-02. Type: Regular. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.