Can this be mounted horizontally?

Yes, I put it in a room AC vent, to outside, it wasnt at a 90 degree angle, appr a 45 anyway, nice product, spring loaded, working great for me

Can the 12" mount vertically? My application need is for my kitchen exhaust fan which exits into attic.

NOTE: by most state's codes; nothing should be openly venting into the attic. I can run through the attic, but needs to be vented outside. That said, the flapper is spring loaded and is opened by the force of the airflow created by your exhaust fan. I suspect it can be mounted vertically, just make sure the flappers are oriented so they open in the direction of airflow (upward) when the exhaust fan comes on. Hope this helps.

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- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4")

- 4" Inch Backdraft Damper for Straight or Flex Duct. Bathroom Exhaust Fan. Kitchen Hood Exhaust Fan and Different Dryer Fan Backflow Preventer. Steel Damper with Aluminum Valve Flaps (4")

Product ID: 299460619

Details

Brand
ECOPRO VENT
Color
Silver
Controller Type
Button Control
Electric fan design
Exhaust Fan
Mounting Type
Duct Mount
Power Source
Corded

⚡Quick DIY press-on installation

🔥Heat-resistant -22°F to 400°F

🛠️4" steel damper fits flex/straight ducts

NZ$65

Duties & taxes included

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Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚀 Stop backdrafts before they start—upgrade your airflow game!

SEAMLESS HVAC INTEGRATION - Designed for perfect compatibility with Ø4" flexible or straight duct systems, ensuring smooth airflow and zero backflow.
VERSATILE AIRFLOW CONTROL - Optimized for bathroom exhaust, kitchen hoods, and dryer fans, this damper prevents backdrafts while maintaining efficient ventilation.
BUILT TO WITHSTAND EXTREMES - Engineered with steel and aluminum valve flaps to resist temperatures from -22°F up to 400°F—ideal for both indoor and outdoor use.
EFFORTLESS DIY INSTALLATION - Press-on design with included mounting hardware lets you secure the damper quickly using glue, tape, or clamps—no pro needed.
DURABILITY MEETS MODERN STYLE - Finished in sleek silver with a bladeless design, it blends seamlessly into any modern HVAC setup while promising long-lasting performance.

This 4-inch backdraft damper by ECOPRO VENT features a robust steel body with aluminum valve flaps, designed for flexible or straight duct systems. Heat-resistant from -22°F to 400°F, it ensures reliable backflow prevention in HVAC, bathroom, kitchen, and dryer exhaust applications. Easy to install with a press-on design and mounting hardware, it offers durable, modern ventilation control for both indoor and outdoor use.

Specifications

ASIN	B08XXT326K
Best Sellers Rank	#162,103 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #358 in HVAC Ducting
Blade Material	Plastic
Brand Name	ECOPRO VENT
Collection Name	Ventilation Fans
Color	Silver
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.4 4.4 out of 5 stars (166)
Electric Fan Design	Exhaust Fan
Finish Type	Painted
Included Components	Mounting Hardware
Indoor Outdoor Usage	Indoor
Installation Type	Duct Mount
Is Product Cordless	No
Manufacturer	ECOPRO VENT
Material	Metal
Model Name	9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd
Model Number	9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd
Mounting Type	Duct Mount
Number of Blades	5
Number of Power Levels	1
Power Source	Corded Electric
Recommended Uses For Product	Cooling, Exhausting
Room Type	Kitchen
Size	4"
Special Features	Bladeless
Style	Modern
Switch Type	Push Button
Unit Count	1.0 Count
Wattage	60 watts

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NZ$65

Duties & taxes included

In stock

Sold byAmazon New ZealandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to New Zealand.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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