Allegro Standard Blower measuring 20" features a 16 ga cold rolled steel housing and offers an overall flow rate of 4650 CFM. It offers a flow rate of 3150 cfm for one 90 deg bend and a flow rate of 2950 for two 90 deg bends. Blower features an integrated carry handle, rubber feet and is powder coated. It can be used for ventilating or extricating air.