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

📏150mm diameter precision fit

🧼Detachable for easy cleaning

🛡️Built-in fine mesh fly screen

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$46.97

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Description

🌬️ Elevate your airflow game with precision and protection!

EASY MAINTENANCE DESIGN - Detachable panel and sleeve simplify cleaning and upkeep, saving you time.
DURABLE HIGH QUALITY ABS - Robust, weather-resistant material ensures long-lasting performance without brittleness.
PRECISION 6 DIAMETER FIT - Seamlessly integrates with standard ventilation ducts for optimal airflow.
VERSATILE MOUNTING OPTIONS - Wall or ceiling installation perfect for bathrooms, offices, and home ventilation needs.
INTEGRATED FLY SCREEN PROTECTION - Keeps insects and debris out while maintaining fresh air circulation.

The Hon&Guan 6'' Soffit Vent is a premium ABS ventilation solution featuring a 150mm diameter, built-in fine mesh fly screen, and detachable components for effortless maintenance. Designed for both wall and ceiling mounting, it ensures efficient airflow while preventing pests and weather intrusion, making it ideal for bathrooms, offices, and home environments.

Specifications

ASIN	B077HJMJ7T
ASIN	B077HJMJ7T
Batteries Included?	No
Batteries Required?	No
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (532)
Customer reviews	4.6 4.6 out of 5 stars (532)
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

Reviews

D**G

A good product

18.11.2024

P**G

Strong plastic and good fit

28.11.2025

G**R

Good quality

22.04.2026

D**.

Does not work with the Hehou bathroom exhaust fan.

3.04.2026

G**7

EASY!! Add a vent anywhere!

4.07.2020

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