Steinberg14 White 100mm Air Supply Valve - 4 inch Extractor Fan Vent Cover - Round Adjustable Air Vent - Bathroom Diffuser - Wall Vent Cover - Ceiling Vent Grille - Metal Ducting Cover

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- High-Quality Materials Internal vent cover is made of durable white RAL 9016 polymer coated steel, ensuring robustness against corrosion. Connection Diameter 99mm 3.9 inch - External Diameter 140mm 5.5 inch
- Adjustable Airflow Air vent cover is equipped with a threaded spindle mechanism, allowing effortless adjustment of airflow. By simply rotating the middle disc, you can widen or narrow the opening, effectively customizing ventilation according to your preference. The airflow can be fully closed if desired
- Ideal Outlet for Ventilation System With its quiet operation and optimal airflow, this Air vent grill is an effective choice for concluding ventilation systems in bathrooms or other spaces, ensuring efficient air circulation and maintaining a comfortable environment
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