HEPA Filter 3 Pack for Roomba 800 Series High Efficiency Vacuum Filters

100% OEM Fit for iRobot #4636433 | 0.3mm Micro-Tolerance Verified Triple-Layer Filtration System | Lab-Certified 99.97% Efficiency 12,000+ Cycle Durability Testing Air quality monitor shows 81% cleaner airflow since installation" Captures 0.3-40µm particles including common household microparticles Compatible with: For iRobot roomba 800 900 series vacuum cleaning robots. Regularly replace your HEPA filters, can effectively filter dust, pollen and other suspended particulate matter air pollution. For best results, filters should be replaced every 2 - 3 months.