Allvent Non Return Damper 200MM

The Allvent ALVBD20 ALV358 Non Return Damper is a 200mm in-line ducting accessory designed to help prevent backdraft in circular ventilation systems. Its air-stream operated shutter makes it a practical choice for larger bathrooms, laundries, kitchens, utility rooms, roof spaces, workshops and light commercial ducted exhaust systems where airflow needs to discharge in one direction. Installed in-line with circular ducting, it helps reduce unwanted air returning through the duct run and supports more effective ventilation performance.

• Air-stream operated backdraft shutter
• Designed for in-line installation with circular ducting
• Helps reduce unwanted air returning through the duct system
• Suitable for exhaust fan and ventilation installations
• Ideal for bathrooms, laundries, kitchens, utility rooms and roof space ventilation
• Can be used in residential and light commercial ducted ventilation systems

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