Donaldson-Torit Reverse Pulse Dust Collector. Model: TD573TU. Nominal Airflow: 1000-1100 CFM or 1699-1869 m3/hr. Filter Area: 678 ft2 or 63 m2. Number of Filters: 3 . Number of Valves: 3 Housing Rating: -220 in. of H20 3 Phase, 415V, 3 kW, 5.8A, 2850rpm extraction fan. 50 Litre sealed removalbe dust bin with trolley. Overall height: 3.9 metres. Unit in good condition and runs well. See attached brochure for more information.