Envirovent 4 Inch Silent Inline Fan + Timer

Envirovent Ultra Quiet Inline Fan with Timer
ENV SILMV250/100T

The Envirovent Silent MV is a low profile mixed-flow high power 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/250 has a 2 speed, low energy, high power motor which delivers a huge amount of extraction, 240m3/hr at a near silent 24dBA. Simply put, once this fan is in situ you won't even know it is there. This model comes complete with a timer designed to overrun upto 25 minutes after being switched off.
The main body of the fan can be rotated in its mounting bracket whilst the cable connection box can be rotated through 360° to ensure it can be fitted in even the tightest of spaces.

Specification
Air Extraction : Max 250m3/hr - 69 L/s - Low 200m3/hr - 55 L/s
Noise : Max 24dB(A) - Min 19dB(A)
Watts : Max 24w - Min 18w
IP Rating : IP44

Dimensions
Width: 204mm
Height: 252mm (Rotable)
Length: 575mm
Spigot Diameter : 97mm