- Compatible with Mooka & KOISO B-D02L and Vewior B-D02U Air Purifiers, this filter set is designed to replace Part # B-D02L & B-D02U. Please note, this is not an OEM product; brand names are used solely to indicate compatibility. - The B-D02 filter set features a robust 3-in-1 filtration system, including a pre-filter, H13 True HEPA filter, and high-efficiency activated carbon filter. The pre-filter captures large particles like dust and pet hair, while the True HEPA filter removes 99.97% of airborne particles as small as 0.3 microns, ensuring cleaner air for you and your family. - Each package includes two H13 True HEPA filters. These filters are easy to install and replace, making them a vital accessory for sustaining the performance of your MOOKA B-D02 Air Purifier. - Installation is tool-free and straightforward, allowing for quick and hassle-free replacement. For optimal air quality, it is recommended to replace the filter every 6-8 months or sooner depending on usage and air quality conditions. - Ideal for households with pets, allergy sufferers, or anyone seeking to improve indoor air quality, these filters effectively reduce allergens, odors, and dust, providing a healthier living environment. Perfect for use in bedrooms, living rooms, or home offices, they help enhance overall comfort by maintaining clean air throughout your home.