As part of normal maintenance, it can be removed and replaced Filter assembly blocks particles and debris from the dirty water tank. Detachable and rinsable for easy maintenance, rinse under cold running water and give it several hours to be dried completely before reinstalling. Easy to clean and replace. recommends a new Brush Roll and Filter Assembly every 4 months for best cleaning results. Filter filters fine dust to reduce dust, pollen and other from penetrating into the air you breathe Model Number: for H12 pro/H12pro plus / M13Beta Material: Plastic colour: grey+Black Package Contents: 2 x Rolling Brush 5 x Hepa Filter 1 x Cleaning Brush 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.