The WINIX D480 True HEPA Replacement Filter D4 Pack includes 4 carbon filters and 1 HEPA filter, designed for the WINIX D480 air purifier. With a MERV rating of 10, these filters have a filter life of 12 months, providing efficient filtration technology for indoor air quality improvement. Made in Korea, Republic of, these white filters offer True HEPA filtration technology, suitable for use in the specified air purifier model manufactured in 2024. Perfect for maintaining clean and fresh air in your home, these filters are a reliable choice for long-term air purification.