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Material short Brand WeCooper Exterior finish Stainless Steel About this item Insert check valve DN 150 mm extractor. Especially suitable for plugging into exhaust hose. Perfect for use in tumble dryers, bathrooms, garages, air conditioners, fans, cooker hoods, ventilation systems. The folding valve opens and closes automatically and allows only one air flow in one direction, preventing cold air from entering. When the blind is mounted, the flap leaves open only in the direction of the outflowing air. The shaft axle must be vertical when installing the backflow flap and best installed in a horizontal position and inserted completely into the pipe. This also applies to vertical installation."
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