1Applicable Models: This filter set is perfectly designed to fit for J4, J4 LITE robot vacuum cleaners, which can be perfectly fit with your machine. 2Effective Cleaning: The filter efficiently removes up to 99% of dust, dirt, pet hair, and microscopic particles, providing a thorough cleaning experience. 3Durable Material: Constructed with high efficiency particulate air filter and precise craftsmanship, this filter set is both durable and long lasting. 4Washable and Reusable: The filter can be washed and reused, simply rinse it with water and let it air dry for easy cleaning, environmentally friendly to use. 5Easy Installation and Maintenance: These filters are easy to install and require no additional tools. They are designed for hassle free maintenance, ensuring your vacuum cleaner operates smoothly and efficiently.