150mm Circular Duct Connector with Backdraught Shutter | 6 Inch Non-Return Damper For Ventilation Ducting And Extractor Fan Connections

Product Description The 150mm Circular Duct Connector with Damper is designed to provide reliable airflow control within round ventilation ducting systems. Featuring an integrated inline gravity flap backdraught shutter, this 6 inch duct connector helps prevent unwanted air movement when your extractor fan is not in operation. Ideal for use in bathroom and kitchen ventilation, HVAC ducting and tumble dryer vent systems, it offers a practical solution for improving airflow efficiency and reducing backflow. Key Features 150mm (6 inch) round duct connector with integrated gravity damper Inline backdraught shutter for airflow control Push-fit compatibility with rigid duct pipe and flexible hose Smooth internal airflow path Durable heat- and crack-resistant PVC construction The built-in gravity flap backdraught shutter opens automatically when airflow is present and closes when the fan stops. This helps prevent cold air, odours, debris and insects from entering the ventilation duct, improving comfort and energy efficiency. Designed for push-fit installation, the connector fits securely inside 150mm rigid round duct pipe or approximately 152mm flexible ventilation hose. It can also be used to join multiple duct lengths, creating a longer and continuous ventilation run. Manufactured from high-quality PVC plastic, the connector is resistant to cracking, fading and heat exposure, making it suitable for long-term use in both domestic and commercial ventilation systems. The smooth internal design supports efficient airflow and minimises resistance, helping maintain optimal performance in extractor fan ducting and HVAC installations. Suitable for 150mm extractor fans, cooker hood ducting, tumble dryer vents, inline extract fans, hydroponic ventilation setups and general HVAC duct systems. Ideal for bathrooms, kitchens, utility rooms and light commercial ventilation projects. Installation Notes Insert the duct connector into compatible 150mm round ducting or flexible hose and secure with duct tape or hose clips where required for an airtight seal. Ensure the damper flap is correctly aligned within the airflow direction to maintain proper backdraught prevention and ventilation efficiency.