Will the exhaust of a generator open the louvers?

NO! The exhaust air flow from a generator will be too concentrated. Air flow to open louver is 18 inches diameter. Carbon monoxide is poisonous!

which size would you recommend for installing between studs that are 16" on center?

It is difficult to answer not seeing what you are doing. The 14in is 17 3/4 inch outer, so if you truly have 16 in center you should have 16 inch opening between studs which would give you little over 1/2 inch of fan frame to reach and attach to both studs.. So you may have to drill holes through the side metal frame . The 12in shutter would be to small IF you are wanting to reach both studs. The 16in shutter is to big to fit between studs by 1/2 inch, and you do not want to cut studs. good luck

I need one that mounts on the outside of the structure (framed in after mounting). this one mounts on the inside to open out. is there another option?

If you are going to use this unit for venting outwards you can mount it on the outside and the louvers will still move outwards. I mounted mine on the outside and I don't see how you can get it backwards.

Instead of a fan can I use an electric motor to ope and close?

No, there is no linkage to connect a motor.

Ipower 12 Inch Square Aluminum Automatic Gravity Shutter Louver Vent

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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$454.38

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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Description

🌬️ Elevate your airflow game with the iPower Gravity Shutter—where durability meets effortless style!

BUILT TO BRAVE THE ELEMENTS - Crafted from heavy-duty aluminum that resists rust and corrosion, ensuring long-lasting durability.
STORM PROOF SEAL TECHNOLOGY - Louvers close fully to block water ingress, standing strong against hurricanes and tropical storms.
VERSATILE COOLING COMPANION - Pairs perfectly with iPower motors and fans (sold separately) to optimize airflow and reduce heat and moisture.
SMART GRAVITY ACTIVATED OPERATION - Automatically opens with airflow and closes by gravity—no extra power needed for smooth function.
PRECISION FIT EFFORTLESS VENTILATION - Perfect 12-inch inner dimension for seamless installation in homes, garages, and greenhouses.

The iPower 12-Inch Square Aluminum Automatic Gravity Shutter is a sleek, corrosion-resistant ventilation solution designed for indoor and outdoor use. Measuring 14.96" square with a 12.32" inner opening, it features heavy-duty aluminum louvers that automatically open with airflow and close tightly to prevent water entry. Engineered to withstand severe weather conditions, this shutter is ideal for enhancing ventilation in homes, garages, and greenhouses. Note: fan and motor sold separately.

Specifications

ASIN	B08JGBT63V
Blade Length	15.94 Inches
Blade Material	Aluminium
Brand	iPower
Brand Name	iPower
Collection Name	All
Colour	Silver
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.5 out of 5 stars 462 Reviews
Electric Fan Design	Exhaust Fan
Electric fan design	Exhaust Fan
Finish Type	Polished
Form Factor	Square, Louvered, Automatic
Included Components	Automatic Gravity Shutter
Indoor Outdoor Usage	Indoor
Installation Type	Wall Mount
Is Product Cordless	No
Item Dimensions D x W x H	38D x 38W x 3.5H Centimeters
Item Type Name	Automatic Gravity Shutter
Item Weight	2.06 Pounds
Manufacturer	ipower
Material Type	Aluminum
Model Name	HIDAMP12
Model Number	HIDAMP12
Mounting Type	Wall Mount
Number of Blades	3
Number of Packs	1
Number of Power Levels	1
Part Number	HIDAMP12
Power Source	Corded Electric
Power Source Type	Corded Electric
Product Dimensions	38D x 38W x 3.5H Centimeters
Recommended Uses For Product	Exhausting
Reusability	Reusable
Room Type	Bathroom, Kitchen
Size	12 Inch
Special Features	Manual
Style	Modern
Style Name	Modern
Switch Type	Pull Chain
Theme	Modern
UPC	840166217948 840166213049
Unit Count	1.0 Count

Reviews

A**R

This is a great static vent. I used it for intake for my greenhouse.

This static vent work great. The three louvers are light weight and open accordingly as you turn on an exhaust fan. I shielded the vent with a protective cover to keep blowing rain out. Installation is easy. I did add a small strip of weatherstripping to aid in the seal to the structure. It is a little pricy but overall, a great value.

23.10.2023

B**A

Well built and very sturdy

nice piece, helped with my HVAC issue, expect it to last as long as anything in that mechanical room.

18.09.2023

D**D

Évaluation

Bonne achat bonne qualité du produit bon prix fait un très travaille.

15.10.2024

J**C

Very effective!

Reasonably quiet and very efficient!

6.12.2024

P**D

Solidly made but not airtight

This item is not airtight 3/8'' openings on 3 sides, bugs can enter so as airflow even when closed. Well constructed but not airtight.

30.07.2025

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$454.38

Duties & taxes included

In stock

Sold byAmazon British Virgin IslandsDelivered 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 British Virgin Islands.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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