General description Clean accessories keep your Eufy RoboVac L35 running at its best. The filter effectively captures fine dust, preventing dust, pollen, and other allergens from entering the air you breathe. Regular maintenance is essential, and to achieve optimal cleaning performance, the accessories should be replaced every 2-3 months depending on usage frequency. Technical specifications Model: for RoboVac L35 Material: cloth Package Contents: 6 x Hepa Filters, 6 x Cloth Measurement allowed error: +/- 1-3 cm