The Vario, available from Universal Fans , is an axial exhaust fan suitable for air extraction directly to the outside.
The Vario exhaust fan has shutters at the front to stop air escaping or coming in from outside, comes in various sizes and models such us auto shutters, pull cord, long life, etc.
There is also an in-built version, which may be placed inside the wall so only the cover is seen.
The capacity figures below refer to the standard models, a higher capacity option is also available.