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calimaero® RKKI Backdraft damper 4 Dryer Vent Backflow Preventer for HVAC Automatic Vent Damper 4 inch duct damper DIN EN 1506 Dryer Vent Damper UV Resistant Plastic
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*Packaging of actual item may differ from photo shown
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calimaero® RKKI Backdraft damper 4 Dryer Vent Features
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PRODUCT FEATURES This calimaero inline vent draft blocker works well in all common round ducts and flexible ducts according to DIN EN 1506. The 4 inch backdraft damper prevents the exhaust air from flowing back and cold air from flowing in. The flaps automatically open when the fan blows the exhaust air and close when the air flow stops.
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INSTALLATION The 4 inch HVAC damper is pushed completely into the exhaust pipe. Easy to install and perfect for retrofitting bathroom fans and ventilation systems without a backdraft damper 4 inch The flaps must be aligned horizontally in order to close optimally.
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VERSATILE USE This 4 inch damper duct is applicable in all supply and exhaust air systems, such as air conditioning systems, tumble dryers, extractor fan, cooker hood and other HVAC applications. Our well-made 4 backdraft damper's plastic is weatherproof and UV resistant.
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PERFORMANCE Ideal choice for improving any ducting system without a backdraft duct damper. The smooth-running flaps can also be opened by small fans great for your home improvement.
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CUSTOMER SERVICE We are experts in ventilation for more than 40 years. If you have any questions, please contact us directly and we'll promptly assist you.
