Bosch GAS 20 L SFC Professional Dust Extraction features a semi-automatic filter cleaning (SFC) system for easy maintenance. The extractor has an L-class dust extractor certification in accordance with EU standards, ensuring reliable user protection. It also features a particularly compact design for easy transportation and loading. This mobile dust extractor is intended for wet and dry vacuuming. Supplied with: 1 x Paper Dust Bag.1 x Suction Control Regulator.1 x Polyester Filter.1 x Hose 3m x 35mm .1 x Floor Nozzle Set 35mm .1 x Crevice Nozzle 35mm .1 x Coarse Dirt Nozzle 35mm .2 x Dust Extraction Pipes 0.5m x  35mm . Specifications: Input Power: 1,200W.Tank Capacity: Wet 16 litre, Dry 20 litre.Max. Airflow Rate (Turbine): 61 l/s.Max. Vacuum Pressure (Turbine): 248 mbar.Filter Surface Area: 4,300cm.Suction Hose Nominal Width: 35mm.Weight: 12.7kg.