Cincinnati Backward Inclined Blower. Model: HDBI-180. S/N: 9817253 01. Fan diameter: 18 in. Capacity: 5750 cfm @ 0 SP. Baldor Industrial Motor, 3 hp, 1750 rpm, 208-230/460 V, 8.5-8.2/4.5 amps, 60 Hz, 3 phase. Backward Inclined Blowers are an excellent choice for centrifugal fan applications that require high volumes of air and pressures. Applications include: forced ventilation requiring higher volumes and pressures, air supply for clean side of dust collectors, when all stainless steel construction is required. Inlets: (1) 20 in. dia. port. Outlets: (1) 21 in. L x 20 in. W vent. Overall dimensions: 59 in. L x 35 in. W x 44-1/2 in. H.