Fixed Bladed Tube Axial Flow Fans : DCA & DCMA - AD series fans are low pressure (up to 50 mmwc) large air delivery Axial Flow Fans used in HVAC applications and exhaust applications. Capacity range upto 150,000 m3h. Cast aluminum aerofoil section bladed impeller. Total efficiency up to 70%. Impeller diameter up to 2000 mm. Available in V belt driven, direct drive configurations. Dynamically balanced. Welded steel construction, temperature rating up to 50 C.