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.

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

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

Product ID: 236492452

Details

Brand
iPower
Color
Silver
Electric fan design
Exhaust Fan
Mounting Type
Ceiling Mount
Power Source
ac
Product Dimensions
14.96"D x x

📏14.96" square dimension

🌧️100% weatherproof closure

🛡️Rust-proof aluminum build

E£ 14309

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Description

🌬️ Elevate your airflow game with iPower’s sleek, storm-proof shutter!

STORM READY SEAL - Louvers close fully to block water ingress, engineered to withstand hurricanes and tropical storms.
PRECISION FIT FINISH - Perfect 14.96" x 14.96" size for seamless installation in homes, garages, and greenhouses.
VERSATILE COMPATIBILITY - Designed to pair with iPower motors and fan blades (sold separately) for enhanced cooling and moisture control.
EFFORTLESS CLIMATE CONTROL - Automatic gravity shutter opens with airflow and closes when idle, optimizing ventilation without manual effort.
BUILT TO BRAVE THE ELEMENTS - Crafted from premium aluminum that resists rust and corrosion, ensuring long-lasting durability.

The iPower 12-Inch Square Automatic Gravity Shutter is a robust, corrosion-resistant aluminum vent designed for efficient airflow management in residential and greenhouse settings. Measuring 14.96" square, it features a weatherproof louver system that automatically opens and closes via gravity, preventing water intrusion and standing up to severe weather conditions. Ideal for pairing with iPower exhaust fans (sold separately), it offers a durable, low-maintenance solution for superior ventilation.

Specifications

ASIN	B08JGBT63V
Best Sellers Rank	#142,739 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #17 in Exterior Louver Window Shutters
Blade Length	15.94 inches
Blade Material	Aluminium
Brand Name	iPower
Color	Silver
Control Method	Touch
Controller Type	Button Control
Customer Reviews	4.4 4.4 out of 5 stars (544)
Electric Fan Design	Exhaust Fan
Finish Type	Unfinished
Included Components	Automatic Gravity Shutter
Indoor Outdoor Usage	Indoor
Installation Type	Mounted
Item Dimensions D x W x H	14.96"D x 14.96"W x 1.38"H
Item Type Name	Automatic Gravity Shutter
Item Weight	2.1 pounds
Manufacturer	iPower
Material	Aluminum
Model Name	HIDAMP12
Model Number	HIDAMP12
Mounting Type	Ceiling Mount
Number of Blades	3
Number of Packs	1
Number of Power Levels	1
Part Number	HIDAMP12
Power Source	ac
Recommended Uses For Product	Exhausting
Room Type	Bathroom
Size	12 Inch
Special Features	Manual
Style	1-Pack
Switch Type	Push Button
UPC	840166217948 840166213049
Unit Count	1 Count

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E£ 14309

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered 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 EGYPT.

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