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, Silver

iPower 12-Inch Square Aluminum Automatic Gravity Shutter Louver Vent, Silver

Product ID: 361290062

Details

Brand
iPower
Colour
Silver
Electric fan design
Exhaust Fan
Mounting type
Wall Mount
Power source
Corded
Product dimensions
3.5D x 38W x

📏14.96" x 14.96" x 1.38" outer dimension

🌪️Storm-proof, fully sealing louvers

🛡️Durable, corrosion-resistant aluminum

Description

🌬️ Elevate your airflow game with effortless, storm-proof style!

STORM READY PROTECTION - Heavy-duty louvers close completely to block water, pests, and withstand hurricanes and tornado-force winds.
BUILT TO BRAVE THE ELEMENTS - Crafted from premium aluminum that resists rust and corrosion, maintaining sleek looks and long-lasting durability.
VERSATILE COOLING COMPANION - Designed to pair with iPower motors and fans (sold separately) to keep your space cool, dry, and dust-free.
EFFORTLESS AUTOMATIC OPERATION - Gravity-driven louvers open with airflow and close when idle, maximizing energy efficiency without manual effort.
PRECISION FIT FOR SEAMLESS VENTILATION - Perfect 12-inch inner dimension ensures optimal airflow and easy installation in garages, greenhouses, and homes.

The iPower 12-Inch Square Aluminum Automatic Gravity Shutter is a robust, corrosion-resistant vent designed for seamless airflow control in residential and commercial spaces. Measuring 14.96" square externally with a 12.32" inner opening, it features heavy-duty aluminum louvers that automatically open and close via gravity, providing reliable protection against water, pests, and extreme weather conditions. Ideal for garages, greenhouses, and homes, it pairs perfectly with iPower exhaust fans (sold separately) to enhance ventilation and maintain a clean, cool environment.

Specifications

ASIN	B08JGBT63V
Blade Length	15.94 Inches
Blade Material	Aluminum
Brand	iPower
Brand Name	iPower
Color	Silver
Colour	Silver
Control Method	Remote
Controller Type	Remote Control
Customer Reviews	4.5 out of 5 stars 457 Reviews
Electric Fan Design	Exhaust Fan
Electric fan design	Exhaust Fan
Finish Type	Polished
Included Components	Automatic Gravity Shutter
Indoor Outdoor Usage	Outdoor
Is Product Cordless	No
Item Dimensions D x W x H	3.5D x 38W x 3.5H centimeters
Item Type Name	Automatic Gravity Shutter
Manufacturer	iPower
Material	Aluminum
Model Name	HIDAMP12
Model Number	HIDAMP12
Mounting Type	Wall Mount
Number of Blades	3
Number of Power Levels	1
Power Source	Corded Electric
Power source	Corded Electric
Product dimensions	3.5D x 38W x 3.5H centimeters
Recommended Uses For Product	Cooling
Reusability	Highly Reusable
Room Type	Garage
Special Features	Manual
Style	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.

23.10.2023

D**E

Great quality

21.04.2022

R**D

Évaluation

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

15.10.2024

P**D

Solidly made but not airtight

30.07.2025

T**B

Very Bright

30.09.2024

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