Aero 21 is the smallest model in the aero 2126 series with compact design and easy to use features such as push and clean filter cleaning system and convenient accessory storage the 20 litre machine has efficient suction performance robust trolley and lifting handle the aero wet and dry vacuum cleaner can easily be transported to any location thanks to the light weight compact and robust design the container can nice and easily be emptied either by dispose the standard fleece filter bag