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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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: 387737737

🌀6'' (150mm) diameter for optimal airflow

🔧Detachable panel & sleeve for easy cleaning

🛡️Built-in fine mesh fly screen for pest protection

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C$4444

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Sold byAmazon NicaraguaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

WEATHER RESISTANT SEAL - Advanced weather seal prevents leaks and drafts, maintaining comfort and energy efficiency.
HASSLE FREE MAINTENANCE - Detachable panel and sleeve make cleaning and upkeep quick and simple—no tools required.
PEST PROOF PEACE OF MIND - Integrated fine mesh fly screen keeps bugs and debris out, safeguarding your indoor air quality.
VERSATILE MOUNTING OPTIONS - Wall or ceiling installation adapts seamlessly to your space and ventilation needs.
EFFORTLESS VENTILATION UPGRADE - 6-inch round design ensures maximum air exchange for bathrooms, offices, and homes.

The Hon&Guan 6'' Soffit Vent is a high-quality ABS round air vent featuring a 150mm diameter and 77mm sleeve height. It includes a built-in fine mesh fly screen to block pests and a weather seal to prevent leaks and drafts. Designed for easy cleaning with detachable parts, it supports both wall and ceiling mounting, making it ideal for bathroom, office, and home ventilation needs.

Specifications

ASIN	B077HJMJ7T
ASIN	B077HJMJ7T
Batteries Included?	No
Batteries Required?	No
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (541)
Customer reviews	4.6 4.6 out of 5 stars (541)
Date First Available	21 May 2018
Date First Available	21 May 2018
Included components	Mesh, Vent
Is Discontinued By Manufacturer	No
Item Package Quantity	1
Item Weight	236 g
Item model number	PI024
Item model number	PI024
Manufacturer	Hon&Guan
Manufacturer	Hon&Guan
Material	ABS
Part number	BY150
Product Dimensions	20.98 x 20.98 x 7.49 cm; 235.87 g
Product Dimensions	20.98 x 20.98 x 7.49 cm; 235.87 g
Size	6 Inch

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