Home Ventilation Fans & Blowers 12” to 48” Direct Drive Tube Axial Duct Fans – 1750 RPM (1 HP Frame/Prop) Cincinnati Fan 12” to 48” Direct Drive Tube Axial Duct Fans – 1750 RPM (1 HP Frame/Prop) $1,032.79 12” to 48” Direct Drive Tube Axial Duct Fans – 1750 RPM (1 HP Frame/Prop) quantity Add to cart