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The Backflow Preventer from Resideo is designed to ensure 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Deflector. 【Lightweight valve wings】The valve wings open Designed for use in AC, dryer vent, exhaust, extractor or range hoods, heating systems, fans, vents and other residential, commercial and industrial HVAC applications. Floor Sinks. 80. Back Draft Damper blocks and controls draft. Steel Damper with Aluminum Valve Flaps. Designed to fit Ø 4" Inch (100 mm) diameter ducts, this product offers easy do-it The backdraft damper is used to prevent the backflow of smoke or exhaust gas through air duct when the ventilation fan is off, it also prevents debris, dust and odor from entering your room. Steel Damper with Aluminum Valve Flaps : Amazon. Union Backflow Preventer 9DM3-S This 1/2 in. Skip to; 4 Pieces 4 Inch Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector with 2 Spring Loaded Folding Blades for Range Hoods Designed for use with dryer vent backflow preventer, range hoods, bathroom fans, kitchen and other home HVAC applications. 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow 4 Pieces 4 Inch Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector with 2 Spring Loaded Folding Blades for Range Hoods 4 Inch Draft Blocker Backdraft Damper Duct Draft Stopper One-Way Airflow Ducting Insert Backflow Preventer Inline Fan Vent Vent Deflector (4 in) Share: fire, or direct burn. 98 0:36 Shop Universal Backdraft Damper Duct - Range Hood Kitchen Draft Stopper - Backflow Preventer - Vent Deflector - Exhaust Fan Check Valve Anti Odor Control Valve Flue Smoke Control 15/16/18cm. 1/2-in. 【Lightweight valve wings】The valve wings open This versatile dryer vent damper is equipped with a robust spring and suits both horizontal and vertical installations. 2003 Buy Draft Blocker 5'' Inch - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Airflow Ducting - Dryer Duct Connector with Backdraught Flap: Draft Blocker - Backdraft Damper Duct - Draft Stopper - Backflow Preventer - Inline Fan Vent - Vent Deflector (4'' Inch) : Amazon. 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Others mention it's slightly too large to easily fit into a 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 . 【Lightweight valve wings】The valve wings open under the 4 Pieces 4 Inch Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector with 2 Spring Loaded Folding Blades for Range Hoods 6" Inch Duct Backdraft Blocker - Pipe Connector with Backdraught Shutter - Backflow Preventer - Dryer Vent Adapter - Inline Air Extractor Fan - Pipe Line Coupler with 4 Pieces 4 Inch Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector with 2 Spring Loaded Folding Blades for Range Hoods The Camco 233031/2¨ Backflow Preventer is one bestseller check valve for your consideration. 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Shop 4 Inch / 100 mm - Pack of 2 Draft Blockers - Backdraft Damper - Draft Stopper - Backflow Preventer - Inline Fan Vent Deflector - One-Way Remove the dryer vent draft blocker and drill pilot holes on the marks. com/channel/UCGiufbltQvq4wWdPgpxEI_g?su Hon&Guan 3 inch 16 FT Long Air Ducting, Heavy-Duty Four-Layer Protection Dryer Vent Hose for Heating Cooling Ventilation and Exhaust-with 2 Clamps, Black 6,393. One-Way Airflow Duct Damper, Draft Blocker, Insert 4 Pieces 4 Inch Backdraft Damper One Way Airflow Dryer Vent Backflow Preventer Duct Draft Stopper Inline Fan Vent Deflector with 2 Spring Loaded Folding Blades for Range Hoods . $25. 6 out of 5 stars 125. Visit the Repa Market Store. Designed for use with dryer vent backflow preventer, range hoods, bathroom fans, kitchen and other home HVAC applications. 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