A very good price-performance ratio for this PRIMA KLIMA tube fan, it is delivered including brackets for the wall or the ceiling.

The high-light is the two-steps-switch to control the speed with. Due to this two-steps-switch you can abdicate a speed controller.
This tube fan – or radial ventilator – by PRIMA KLIMA circulates 220 m³ air per hour on step I, even 360 m³ air per hour in step II and works quite quiet.(Using it with speed contoller, it always has to be switched on step II)
The level of noise is always dependend on the drag inside the air hose. So you can lower the noise by widen the diameter of the hose. This you can do by using a transition clutch from 125 mm to 160 mm. That's still not all – your tube fan gets even MORE silent, when you use an isolated 160 mm hose instead of an regular 160 mm hose.
Using the added wall brackets the fan can be installed to the wall in any desired position. Due to the tube fan's bottom, wich intakes the air, it's recommended not to use the tube fan standing up on the ground. Because of the aerodynamic fins you'll have a effective result.

Further data of the PRIMA KLIMA tube fan:
230V,
50 Hz,
100W,
0.3 A,
height 20 cm,
diameter of the tube 12.5 cm,
diameter in whole ca. 22 cm