Fan impeller with shaft dynamically balanced. Fan speed 1490 RPM. Capacity 1050000 kg / hr density 1.127 kg / m3 discharge pressure @ 40°C: 400 mm /WC Operating temperature: 40°C Drive: Direct impeller on shaft type: Centrifugal / backward curve vanes balancing: As per ISO 1940 G 63. Noise level: Less than 85 DBA @ 1.5 M. Distance material of construction: Impeller - Sailma- 350 and shaft EN 8. Model: VTS MAKE: CB Doctor paint: Coat of red oxide primer with 2 coats of grey enamel paint for combustion air fan- air preheater for new acid plant.