Snail-shells like the ones that are used for these fan-boxes are very quiet because of their construction and working. At the fan-box we add an isolation of foamed plastic, wich literally swallows remaining noises. Meanwhile the fan-box manages to exhaust 3250 m³ per hour and therefore you gain high effectivity with a very low noise-level.

To install the fan-box right, the fitting flanges have already been attached to the holesin te box. So you can fix the air hose to the flanges.
Please remember: The wider the hose - the lower will be the air drag inside it. A low air drag entails a low noise.

With a speed controller for your fan you can decrease energy consumption and controll the operation of the snail-shell fan.

The dimensions are:
Length x width x height = ca. 64 x 60 x 60 cm
in-holes: 2 x ca. 25 cm
out-hole: ca. 35 cm
power: 373 Watt
current: 4.5 amps
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