[Compatible Models] Perfect for VCR04W robot vacuum cleaners. Made of high-quality materials, environmentally friendly materials, soft and durable to use. [HEPA Filter] Made of high-strength environmentally friendly materials, which can block most dust down to 0.3 micrometers. The filter can maintain the cleaning performance of the sweeper, while reducing the penetration of dust and others into the air you breathe. Easy to assemble: The filter is located inside the dust bin. Remove the dust bin by grasping it firmly and pulling it out. To empty the dust bin, find the release latch and pull it open and empty it. Remove the old filter, then put the new filter back in the dust bin. Replacement Filter: A dirty filter will significantly reduce suction power. Depending on the frequency of vacuuming and the amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months. The fine preliminary filter traps larger particles in the air such as dust, hair, pet hair,