VG SERIES
Durable gravity-operated shutters for rectangular ducts that automatically block reverse airflow when ventilation is off—ideal for energy-efficient systems.
Long Product Description:
The VG Series Gravity Shutters are designed to automatically seal off rectangular air ducts when airflow stops, preventing unwanted air movement and energy loss in ventilation, air conditioning, or heating systems. These louvers are ideal for passive shutoff control in residential, commercial, and industrial settings.
Each unit features a galvanized steel frame housing PVC gravity louvre shutters. The shutters open automatically under air pressure and close by gravity when the fan is turned off, eliminating the need for electric actuators. This simple yet effective design enhances system efficiency and reliability without additional power consumption.
Key Features:
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Automatic shutoff for rectangular duct systems
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Gravity-actuated PVC louvers – no motors or wiring needed
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Made from durable galvanized steel for corrosion resistance
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Energy-saving – prevents reverse airflow when the fan is off
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Compatible with rectangular ducts from 400×200 mm to 1000×500 mm
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Designed for upright mounting only to ensure correct shutter function
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Quick and easy installation by fixing directly to ducts
