Envirovent 4 Inch Inline Extractor Fan

Envirovent Ultra Quiet Micro Inline Fan
ENV SILMV160/100

The Envirovent Silent MV is a low profile mixed-flow inline fan and is one of the quietest fans available.
Manufactured in a highly durable plastic with a specially designed internal skin that will direct any noise into a sound-absorbent insulation material. It features rubber gaskets on the inlet and outlet to absorb vibrations.
The SILMV/160 has a 2 speed, low energy, high power motor which delivers a maximum extraction of 180m m3/hr at a near silent 24dBA. Once installed you won't even know this fan is there.
The main body of the fan can be rotated in its mounting bracket to ensure it can be fitted in even the tightest of spaces.

Specification
Air Extraction : Max 180m3/hr - 50 L/s - Low 140m3/hr - 38 L/s
Noise : Max 25dB(A) - Min 21 dB(A)
Watts : Max 25w - Min 12w
IP Rating : IP44

Dimensions
Width: 135mm
Height: 151mm (Rotated) 175mm including wiring housing
Length: 232mm
Spigot Diameter : 97mm