Compatibility: This filter assembly compatible with for Bagless Canister models 2156, 1665, and 16652 Series. Washable: This replacement HEPA filter can be washable. Suggest rinsing the filter once every month, air-dry the filter completely for at least 24 hours. (Note: Turn off and unplug the vacuum before install.) Easy to Assemble: This filter is inside the dirt tank. Remove the dirt bin by firmly grasping it and pulling it out, to empty the dirt bin, find the release latch and pull it to open and empty. Take out the old filter and then place the new filter back into the bin. Replacement Filter: A dirty filter will greatly reduce suction power. Depending on the vacuuming frequency and amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months. Colour:As shown Material:plastic Package Contents: 4 * HEPA filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.