The product is a replacement HEPA filter and 4 pre-filters specifically designed for use with Honeywell 24000 models. These filters are essential for maintaining indoor air quality and ensuring clean, fresh air in your home. The HEPA filter is able to capture particles as small as 0.3 microns, providing efficient filtration for improved ventilation and overall air quality. Perfect for keeping your living space healthy and comfortable, this filter set is a reliable choice for those looking to ensure the cleanliness of their indoor air.