Our True HEPA Filter B 4 Pack and Carbon Pre Filter 4 Pack are engineered for superior air purification. Designed to work seamlessly with Holmes HAPF600, HAPF600D, and HAPF600D-U2 models, these filters deliver exceptional filtration performance, ensuring safe and healthy air in your home. With true HEPA technology, they capture 99.97% of airborne particles as small as 0.3 microns, making them ideal for allergy sufferers and those with sensitive respiratory systems. The premium quality of these filters ensures they last longer and maintain their effectiveness over time, reducing the need for frequent replacements and saving you money in the long run.","Whether you're looking to improve indoor air quality or keep your air purifier running smoothly, these replacement filters are the perfect solution. Ideal for use in homes, offices, or any indoor space where clean air is a priority, they can help eliminate dust, pollen, smoke, and other harmful particles from the air. The carbon pre filter works to remove larger impurities, while the HEPA filter tackles the smallest airborne contaminants. With the included 4-pack set, you can ensure your air purifier stays in top condition for months, guaranteeing a fresh, healthy environment for you and your family.