The Kew Nilfisk Alto Multi ll 22T is a multifunctional vacuum that is designed for indoors or outdoors, wet or dry, dust or rubble. It can even be used to empty blocked sinks, clean-out gutters and empty rain gullies. It comes with 3 great additional features as standard Power Tool Take Off, Push& Clean filter cleaning system and blow function. It has a 30L plastic canister which has a dry capacity of 16L and a wet capacity of 14L, and is supplied with a washable cartridge filter and fleece filter dust bag. The washable cartridge filter means that you can move from dry to wet use without removing the filter. Can be used with or without the fleece filter bag. An electronic warning system alerts the user that the suction is dropping and the filter needs to be cleaned. The Push& Clean filter system enables the filter to be cleaned whilst in use, pushing air through the filter to clean any clogging and ensuring you can work longer without having to empty the tub or clean the blocked filter