What does the a, b, c numbers mean? measurements in what?

The sizes in the picture are all in in millimeters. 25 mm equals about 1 inch so the size 75 is 3 inch, the size 100 is 4 inch and so on. The size 150 is the 6 inch vent. A=8.26in B=3.15in C=5.6in

Does it have a fly screen? Several reviewers said that it doesn't come with the screen.

There is a white plastic screen inside it. I don't remember how big the openings in the screen were as I used it inside and discarded the screen before I installed it.

Is it adjustable? Can air flow be completely shut off?

No, it isn't adjustable, and you can't shut off airflow. Why would you want to?

How does it “freely” come apart? It has to so the screen can be cleaned. It won’t budge pulling and twisting.

This slips on. Mine points downward at a 45 so I had to put a drop of silicone on it to keep in from sliding off.

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HG Power 3 Inch Round Air Vent, ABS Louver Grille Cover with Built-in Screen Mesh, White Soffit Vent for Bathroom Office Kitchen Ventilation - Opening Size 2.83"

Product ID: 59776679

🧼Detachable panel for easy cleaning

♻️Durable eco-friendly ABS material

🛠️3-inch diameter precision fit

R379

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Description

🌬️ Elevate your airflow game with style and ease!

BUILT IN SCREEN MESH - Keeps pests out while ensuring optimal airflow and freshness.
SLEEK 3 INCH DIAMETER - Perfectly sized for seamless bathroom, kitchen, or office ventilation.
EFFORTLESS MAINTENANCE - Detachable white panel lets you clean and maintain with zero hassle.
ECO CONSCIOUS ABS BUILD - Crafted from non-toxic, environment-friendly ABS for a healthier space.
VERSATILE MOUNTING OPTIONS - Wall or ceiling installation adapts to your unique space needs.

The HG Power 3 Inch Round Air Vent combines a sleek, modern design with durable, eco-friendly ABS material. Featuring a detachable panel for easy cleaning and a built-in screen mesh to block pests, it offers versatile wall or ceiling installation for efficient ventilation in bathrooms, kitchens, or offices. Trusted by thousands with a 4.5-star rating and backed by responsive customer service.

Specifications

ASIN	B078RM9T3S
Best Sellers Rank	#6,867 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Soffit Vents
Brand	HG Power
Customer Reviews	4.5 4.5 out of 5 stars (2,275)
Date First Available	January 2, 2018
Item Weight	2.82 ounces
Item model number	USPI021
Manufacturer	HG POWER
Manufacturer Part Number	USPI021
Model	YJHUS-PI021
Package Dimensions	4.57 x 4.45 x 2.99 inches
Special Features	Water Resistant
Voltage	110 volts

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TrustScore 4.5 | 7,300+ reviews

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R379

Duties & taxes included

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.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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