Double Skin Air Handling Unit is provided with hollow shaft with tapering ends for bearing. The Air Handling Unit is sectionalised in construction for ease of transport, installation and maintenance. The Air Handling Unit is attached with fan section with fan, shaft, bearings, condensate pan and drive set, cooling coil section with or without cooling coil. Double Skin Air Handling Unit is attached with centrifugal forward curved multi blade type fan which is dynamically balanced for long trouble free performance.