nijimomo Backwind Prevention Damper, Set of 2, 100, 150, 200, Check Valve, for Pipe Connection, Ventilation Outlet (100)

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1. KEY FEATURES: - Easily retrofitted to exhaust ducts and ventilation openings!A set of 2 headwind prevention dampers.Prevents wind from entering the room and promotes smooth exhaust.Choose from diameters of 100mm, 150mm, and 200mm. - Block the invasion of outside air! ``Outside air gets in'' ``The ventilation openings flap due to strong winds''...Solves such problems!The damper structure opens when the exhaust air blows and closes when the headwind enters, promoting smooth ventilation.Take proper measures against summer typhoons and winter cold! - Easy to install, even for beginners♪ Just connect the check valve to the hose and secure it with tape or clamps!It can be easily installed on air conditioners, kitchen ventilation fan hoods, toilet and bathroom vents, etc.Since it is a set of 2, you can install it in 2 places of interest♪ - Durable and long lasting! Uses ABS resin, which is resistant to shock, heat and rust, and is ideal for exhaust ducts.It is highly weather resistant and can be used outdoors for a long time.Great for use in a wide range of situations, including your home, offices, factories, stores, and facilities! - *Instruction manual is not included.Product contents Headwind prevention damper Set contents 2 pieces Color White Size Diameter 100mm/150mm/200mm *See image for details Material ABS resin *Color appearance may vary slightly depending on the monitor environment.

2. PRODUCT DESCRIPTION: Backwind prevention damper set of 2 100or150or200 Easily retrofitted to exhaust ducts and ventilation openings!A set of 2 headwind prevention dampers.Prevents wind from entering the room and promotes smooth exhaust.Choose from diameters of 100mm, 150mm, and 200mm.[Block the invasion of outside air!] ``Outside air gets in'' and ``ventilators flap due to strong winds''...Solves such problems!The damper structure opens when the exhaust air blows and closes when the headwind enters, promoting smooth ventilation.Take proper measures against summer typhoons and winter cold![Easy to install, even for beginners♪] Just connect the check valve to the hose and secure it with tape or clamps!It can be easily installed on air conditioners, kitchen ventilation fan hoods, toilet and bathroom vents, etc.Since it is a set of 2, you can install it in 2 places of interest ♪ [Durable and long-lasting!] Uses ABS resin, which is resistant to shock, heat and rust, and is ideal for exhaust ducts.It is highly weather resistant and can be used outdoors for a long time.Great for use in a wide range of situations, including your home, offices, factories, stores, and facilities!*Instruction manual is not included.[Product contents] Headwind prevention damper [Set contents] 2 pieces [Color] White [Size] Diameter 100mm/150mm/200mm *See image for details [Material] ABS resin *Color appearance may vary slightly depending on the monitor environment.

3. PRODUCT DIMENSIONS & WEIGHT: - Weight: 0.13 kg - Dimensions: 22.8 x 12.8 x 7.9 cm

4. SPECIFICATIONS: