General description The 12Pcs HEPA Filter for Narwal J3 Robotic Vacuum Cleaner is designed to enhance your household cleaning experience. Made from high-strength environmentally friendly materials, these filters effectively block most dust particles down to 0.3 microns, ensuring cleaner air by reducing the entry of dust, pollen, and other allergens. Technical specifications Material: Plastic Color: White Package Contents: 12 HEPA Filters Measurement allowed error: +/- 1-3 cm Installation Remove the dust container by grasping it firmly and pulling it outward. To empty the dust container, locate the release latch, pull it open, and empty it. Remove the old filter and place the new filter in the dust bin. Usage A dirty filter will significantly reduce suction power. For optimal performance, change the filter at least every 3 to 6 months, depending on vacuuming frequency and the amount of dirt cleaned. Easy to clean, helps remove dirt, dust, and debris on the floor.