As part of normal maintenance, it can be easily removed and replaced The filter assembly blocks large particles and debris from the dirty water tank. Detachable and rinsable for easy maintenance, rinse under cold running water and allow to dry completely for several hours before reinstalling. Easy to clean and replace. recommends a new brush roll and filter assembly every 4 months for best cleaning results. The filter filters fine dust to prevent dust, pollen and other allergens from entering the air you breathe Model Number: for H12 pro/H12pro plus / M13Beta Color: gray + black Material: plastic Package Contents: 2 x Rolling Brush 2 x Hepa Filters Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.