MIVIDE 2Pack 4 inch Backdraft Damper Duct, One Way Airflow Ducting Insert for Ducting in Range Hoods, Bathrooms Fans and kitchen Fan

2PCS 4” Draft Blocker, Backdraft Damper Duct, Draft Stopper, Backflow Preventer, Inline Fan Vent Deflector Features: What Is a Backdraft Damper? A backdraft damper, also known as a gravity damper, is a piece of equipment that allows air to flow through in one direction while preventing air from entering the opposite side, also known as a backdraft. Backdraft dampers assist in the exhaust or intake of heating, ventilation, and air conditioning (HVAC) systems. Why Do I Need a Backdraft Damper? Installing a damper keeps temperature-controlled or purified air within your space while simultaneously keeping outside air from coming in. A backdraft damper is useful in controlling temperature but can also be used to improve the ventilation of a space. Ideal for all tumble dryer vent pipes / hoses, bathroom extractors and vents, air conditioning and heating units, kitchen vents and fans, all home wall and ceiling vents, heat transfer and ventilation systems, gas and electric dryers, cooker hood extractors, as well as a wide variety of industrial uses. Specifications: Quantity: 2 PCS Material: Quality galvanized steel Color: Silver Mold size: backdraft damper: 100x88x0.5mm/ 4×3.5×0.02inches Package contents: 2 x Backdraft damper Warm Notice: Please consult and pay attention to product size before buying. Manual measurement, please allow slight errors on size. The colors may exist slight difference due to different screens.

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1. Items must be returned within 30 days after the purchase date.
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