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Home > Fans by Brand > Manrose Extractor Fans > Manrose MF Mixed Flow Inline Fans

Manrose MF100S 4 Inch Mixed Flow Inline Duct Fan

Manrose MF100S Video Review Watch our MF100 video review
Next Day Delivery Order by 4pm and receive Next Working Day
245m3/hr Extraction rate Extremely Powerful Mixed Flow Impeller - 245m3/hr!
Mixed Flow Impeller Duct from any bathroom zone
Best Inline extractor fan No electrics in bathroom (See installation diagram)
Inline Ceiling Duct Extractor Fan Extracts steam before condensing
Manrose MF100S Inline duct fan Very Quiet - 24db(A)
Manrose MF100S inline extractor fan review Duct up to 10 metres without loss of power.
Specification High Setting:
- Max Flow Rate: 245m3/hr
- Max Flow Rate: 68 L/s
- Noise : 24dB(A)
- Watts : 25w
- Spigot diameter: 98mm
- Overall Length: 298mm
- Overall Width: 168mm
- Height: 180mm

Extractor Fan World Review of the Manrose MF100S

Boasting an Air Flow rate of 245m3/hr or 68L/s, the Manrose MF100S is the most powerful inline extractor fan available. Its super powerful extraction rate is achieved using 'Mixed Flow' (MF) technology which combines the air flow characteristics of both a centrifugal and axial impeller, resulting in very high extraction rates and much higher exhaust pressures. This means that the MF100 can cope with much longer duct runs than a standard axial fan without any significant loss of power. 

The MF100S is particularly great for bathrooms as the internal grille may be sited directly above the shower or bath, thus extracting steam at source (see diagram below). With no electrics in the bathroom it is easy to install, saving both electrician and decorating costs and since it is situated in the loft or ceiling void noise levels are also extremely low.

In summary, the MF100 is not only the best inline duct fan, but in our expert opinion, it is also the best all round fan available. If you have loft space above the bathroom and if your installation allows, the MF100 inline fan is the best extraction solution. Also available in 'Timer' version (MF100T)

Installing the Manrose MF100S Inline Duct Fan

You will need the following, all available from the accessories list below:
1 x Length of flexible aluminium ducting (sold by the metre)
1 x 1230L internal back draught shutter
4 x Duct clamps
1 x 2100 circular internal grille
1 x Fixed external grille - available in white, grey or brown
1 x Condensation trap (If the fan and duct are fitted vertically)
Inline Extractor Fan Installation Guide
An inline fan is installed in the loft or ceiling void above the bathroom (or kitchen etc). Ducting is attached to each end of the fan with one length going to an internal grille in the ceiling of the bathroom and the other going to a grille on the external wall, soffitt or roof.

Duct clamps are used to connect the ducting to each end of the fan and to the spigot of each of the grilles. The back draught shutter may be installed anywhere in the exhaust ducting - that is to say, the ducting which runs from the fan to the outside grille, but is usually situated as near to the outside grille as possible. It's worth pointing out, that the backdraught shutter must be fitted the right way round!

The MF100S is usually wired into the lighting circuit or remote pull cord, but may also be automatically operated by the 'Manrose 1361 Remote Humidistat', sold separately - see related items below.
Manrose MF100S 4 Inch Inline Extractor Fan Mixed Flow Powerful
RRP: £63.16
£52.79 inc vat
Order by 3pm for Next Working Day Delivery

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