Amazon
220 x 90 mm (8.7 x 3.5") connector for flat duct with backflow flap Check valve to prevent the reverse of air flow Made of high-quality plastic / heat-resistant from -5 °C + 60 °C Ensures optimised and efficient airflow Lightweight, quick and easy to assemble
220 x 90 mm (8.7 x 3.5") connector for flat duct with backflow flap Check valve to prevent the reverse of air flow Made of high-quality plastic / heat-resistant from -5 °C + 60 °C Ensures optimised and efficient airflow Lightweight, quick and easy to assemble