The MORI WMF is a weatherproof fan unit for use when an externally mountable, continuously running
ventilation fan is required e.g. to provide sub-floor ventilation.

The integral controls provided as standard allow for the fan to be set at the installation stage to operate at
a continuous trickle speed/airflow. When connected to a boost switch, on closure of the boost switch, the
fan will run at a determined speed set internally within the fan at set up; when the boost switch is open the
fan will revert to trickle speed.

Features and Benefits

Unique weatherproof design allowing
the fan to be mounted outside making
installation and maintenance easier than
with sub-floor mounted fans.
• Low energy fan/motor assembly with
typical electrical running cost under £9
per year for continuous operation.
• Designed to provide;
1. Continuous fan operation at an
adjustable trickle speed
2. Adjustable Boost speed activated by
an external switch (where fitted)
3. Extract Ventilation

TECHNICAL SPECIFICATION
• External removable cowl/louvre material: long lasting galvanised steel.
• External permanently fixed wall baseplate material: long lasting galvanised steel.
• Inner ventilation unit material: Thermoplastic Black with fireproofing grade UL94V-0.
• Main fan assembly easily electrically and mechanically disconnected and withdrawn to allow for
cleaning and maintenance.
• High efficiency aerodynamic fan to optimise quietness and efficiency.
• Single phase EC Brushless motor with integral thermal protection.
• Motor mounted on high quality ball bearings.
• Trickle/ Boost settings.
• Power supply 220V to 240V~ 50Hz