The Nilfisk ALTO's ATTIX 965 H/M SD XC vacuum cleaners are made out of stainless steel, guaranteeing durability and reliability, and offer air flow rates of 2x 3,6000 l/min. They have two motors, and feature a tool deposit space, for various tool storage options, a MultiFit container inlet, that offers various customizations of cleaner operation, a XtremeClean automatic cleaning filter, and a FlowSensor air flow measurement and control unit, that notifies the user if the flow rates are unacceptable. These vacuum cleaners are approved for use in case of M- and H-Class hazardous dust, while still being a cost-effective, low-maintenance choice.