This is the completely airtight vacuum that keeps over 99.99% of dust and allergens inside the canister. The vacuum uses a patented design to create a complete, impervious seal in the dust canister, preventing allergens, dust, and dirt from being recycled into the air. Its HEPA filter captures 99.99% of all airborne particulates between 0.3 and 0.5 microns and its advanced cyclonic technology separates fine dust particles from the air and prevents them from clogging the filter, ensuring optimal suction. The canister removes from the vacuum, converting the unit into a powerful yet lightweight handheld vacuum that allows you to clean stairs or elevated surfaces with the 7'-long hose. The vacuum has seven attachments including a crevice tool and a motorized hand brush ideal for cleaning stairs. 45" H x 13" W x 12" D. (201/2 lbs.)