Good Fit: For Deerma CM300S CM400 CM500 CM800 Wireless Vacuum Cleaner, helping your vacuum cleaners to at their again. High Performance Air Filter: This filter effectively and efficiently the air passes through the vacuum cleaner to it traps particles they re-expel the air. High Efficiency Particulate Air (HEPA) are a type of filter can remove at least 99.97 % of dust, mold, pollen and any other airborne polluting particles with high efficiency. Beneficial for allergy sufferers: Often the particles are collected by a vacuum are microscopic and not visible to the eye. However, even the smallest particles can irritate the nose, throat, or lungs, especially for anyone with allergies or asthma. Without realizing some vacuum cleaners can disperse back into the air. This HEPA filter traps all particles and prevents from re-floating in the air. Easy to Clean and Install: Unlike other types of , this filter is not easily blocked. When it's time to clean it, simply shake the excess in a container and then wash the filter under running water. Let it air dry thoroughly putting it back in the vacuum cleaner. To this replacement filter to your vacuum, simply remove the old filter and twist it into place. Tips: The filter can be washed under running water and must be completely dry reinstalling. Replace the -filter 6 months and the filter year for optimal cleaning performance. Replace or clean your regularly for optimal performance. Size: 50 x 42 x 37mm (approximately). color:Black+white Material:plastic Package Contents: 2 x hepa filter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.