The Deta Vimark 4845 back draught shutter is designed for 100mm (4") ventilation ducts, providing an effective solution to prevent cold air from entering duct systems and rooms. Its inline design ensures there is no pressure loss, maintaining optimal airflow performance. Constructed with a durable ABS plastic casing and a lightweight polymer membrane, this shutter prevents unwanted draughts without disturbing passive indoor ventilation.
The Deta Vimark 4845 back draught shutter is designed for 100mm (4") ventilation ducts, providing an effective solution to prevent cold air from entering duct systems and rooms. Its inline design ensures there is no pressure loss, maintaining optimal airflow performance. Constructed with a durable ABS plastic casing and a lightweight polymer membrane, this shutter prevents unwanted draughts without disturbing passive indoor ventilation.
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