Steinberg14 Flat Duct Connector 220 x 90 mm / 8.7 x 3.5 inch Channel Connector with Backflow Valve

• 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

Shaped part in combination with rectangular ventilation ducts suitable as air discharge and supply duct. Large temperature range of use (from -5°C to +60°C). Non-return damper to avoid reversing the air flow but also to prevent the entry of vermin during periods when the ventilation is inactive (e.g. during maintenance or outside of business hours). Made in Europe.