The Titan T9 Genuine HEPA Media Filter is located on the exhaust of your T9000, T9200 and T9500 canister vacuums. You can access this filter at the rear of the vacuum behind an access panel. Simply press down on the horizontal tab and pull to replace your old filter with a new EF11 style HEPA filter. This high quality HEPA filter features a soft rubber gasket around the edge of the filter to create a tight seal. This seal forces the air to travel through the HEPA media filter where it filters 99.9% down to .3 microns.