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: 490288611

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Details

Brand
ECOPRO VENT
Colour
Silver
Electric fan design
Exhaust Fan
Power Source
Corded
Style
Modern
Room Type
Bathroom

⚡Quick DIY assembly, no pro needed

🔥Heat-resistant -22°F to 400°F

🛠️4-inch steel & aluminum build

Description

🚀 Upgrade your airflow game with the ultimate 4" backdraft damper!

OPTIMIZED AIRFLOW CONTROL - Prevents backdrafts effectively, enhancing ventilation efficiency in bathrooms, kitchens, and dryer systems.
EFFORTLESS DIY INSTALLATION - Press-on design compatible with montage glue, tape, or clamps—get professional results without the hassle.
PRECISION ENGINEERED 4 FIT - Seamlessly integrates with both flexible and straight duct systems for versatile HVAC solutions.
EXTREME TEMPERATURE RESILIENCE - Operates flawlessly from freezing -22°F up to scorching 400°F, perfect for any climate or application.
DURABLE STEEL ALUMINUM CONSTRUCTION - Built to last with corrosion-resistant materials ensuring long-term performance indoors and outdoors.

The ECOPRO VENT 4" Backdraft Damper combines robust steel and aluminum valve flaps to prevent unwanted airflow in HVAC, bathroom, kitchen, and dryer exhaust systems. Engineered for quick DIY installation and built to withstand extreme temperatures from -22°F to 400°F, it ensures reliable, long-lasting ventilation control both indoors and outdoors.

Specifications

Brand	ECOPRO VENT
Colour	Silver
Electric fan design	Exhaust Fan
Power Source	Corded Electric
Style	Modern
Room Type	Bathroom
Special Feature	High Velocity
Recommended Uses For Product	Cooling, Exhausting
Wattage	60 Watts
Finish Type	Painted
Switch Type	Push Button
Included Components	Cord
Indoor/Outdoor Usage	Indoor
Model Name	9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd
Control Method	Touch
Is It Cordless?	No
Number of Power Levels	1
Manufacturer	ECOPRO VENT
Size	4"
Country of Origin	USA
Item model number	9cbd9b70-f7c7-4bf2-bb79-7c8bcd5728bd
ASIN	B08XXT326K

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