How does this attach to the hole I will cut into my aluminum soffit?

There are screw holes in the flange of the inner (black) piece. You will screw the black piece into the material surrounding the hole. The white louvered cover will conceal the screws when installed. FYI, I found that the perforations on the white cover were so small that not enough air could get through, so I cut that out leaving only the louvers in place. Now the fan can do its job because the air can flow through.

how to install this through the 1" thick drywall ceiling?

Use a circle cutter for sheetrock (Home Depot, Lowes, Ace etc.) and screws through the flange of the inner black section. May need to use cavity fasteners.

What is the flow direction, into the grill or out of the grill?

The grill is used with vent duct to exit outside the structure so flow is from inside out. The grill is to prevent critters and birds from getting into your house.

can anyone tell me exact inside and outside diameter?

inside diameter is 2.83 inch. outside diameter is 4.53 inch

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Hon&Guan 6'' Soffit Vent Exhaust Vent, 6 Inch Round Air Vent Dryer Vent Soffit with Built-in a Fly Screen for Bathroom Office Home(150mm）

Product ID: 63712588

🌀150mm diameter for optimal airflow

🔧Detachable panel & sleeve for easy cleaning

🛡️Built-in fine mesh fly screen

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R676

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Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌀 Elevate your airflow game—vent smarter, live fresher!

WEATHERPROOF SEAL - Advanced weather seal blocks drafts and leaks, keeping your environment comfortable year-round.
FLY SCREEN DEFENSE - Integrated fine mesh prevents insects and debris from invading your space—no more unwanted guests.
VERSATILE MOUNTING - Wall or ceiling installation adapts seamlessly to your space and ventilation needs.
HASSLE FREE MAINTENANCE - Detachable panel and sleeve make cleaning a breeze, saving you time and effort.
EFFORTLESS VENTILATION UPGRADE - 6-inch round design ensures maximum air circulation for bathrooms, offices, and homes.

The Hon&Guan 6'' Soffit Vent is a high-quality ABS exhaust vent featuring a 150mm diameter for efficient airflow. It includes a built-in fine mesh fly screen to block insects and debris, plus a weather seal to prevent drafts and leaks. Designed for easy maintenance with detachable parts, it fits both wall and ceiling mounts, making it ideal for bathrooms, offices, and home ventilation.

Specifications

ASIN	B077HJMJ7T
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#10,737 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3 in Soffit Vents
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (1,708)
Date First Available	November 15, 2017
Included Components	Mesh, Vent
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	8.3 ounces
Item model number	PI024
Manufacturer	Hon&Guan
Material	ABS
Part Number	BY150
Product Dimensions	8.26 x 8.26 x 2.95 inches
Size	6 Inch

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R676

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In stock

Sold byAmazon South AfricaDelivered 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 South Africa.

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