The flow regulator fits directly inside a vertical or horizontal duct. For horizontal ducts ensure the bottom (“BAS”) direction indicated on the front of the regulator faces downward. A lip seal ensures air tightness.
Do not twist, push, or otherwise force the moving flap (the regulating element) when fitting. Compliance with the airflow direction indicated on the adapter is vital.
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When the regulator is used in conjunction with an air diffusion vent, the distance between the vent and regulator must be at least equal to the duct diameter for air extraction and at least three times the duct diameter for air supply.
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