Accessories
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Overpressure shutter made of aluminium

Characteristics:
• The overpressure shutter fits directly onto the wall where the fan is installed.
• Aperture by overpressure due to air flow.
• Closed when the fan is at rest.
• Aluminum sheet construction, except models 125 and 140 in galvanised steel sheet.
• Recommended maximum speed of 18m/sec., for models 90, 100, 125 and 140.
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