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Rapidz

Wall Exhaust Fans

Wall exhaust fans extract air through a wall opening towards a discharge point. Their wall-mounted frames place the fan at the extraction opening, rather than within a remote duct run. Housing, guards and shutter arrangements differ by model.

Project buying guide

Wall opening and extraction duty

The wall, ceiling and inline fan guide explains the available extraction arrangements and the dimensions needed for each.

Send your BOQ
  1. 01

    Opening, frame and discharge

    A wall fan sits at the extraction opening. Blade diameter, the installation cut-out and the outside frame are separate measurements. Allow space for the complete frame, guards and any shutter, as well as access for cleaning.

  2. 02

    Airflow through the complete route

    The room airflow calculator estimates the required ventilation flow. The fan must provide that flow against the resistance of its discharge route. Replacement air needs a route into the room; a longer ducted run may suit inline duct fans. Submit a BOQ with the opening dimensions and extraction duty.