SKU: 45644481039

GAF Master Flow Aluminum Goose Neck Roof Vent, 4 in. Diameter, 6-3/8 in. Height

$49.00 $54.44
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Description

GAF Master Flow Aluminum Goose Neck Roof Vent, 4 in. Diameter, 6-3/8 in. HeightMaster Flow Aluminum Goose Neck Roof Vent, 4 in. Durable aluminum goose neck vent for exhausting bath fans, range hoods, and similar appliances through the roof. Features a protective hood and screen to help keep pests and rain out while allowing efficient airflow. Key Features: Purpose Built Venting: Ideal for bath fans, range hoods, and other appliance exhausts through the roof Durable Aluminum Construction: Corrosion resistant aluminum body for

Master Flow Aluminum Goose Neck Roof Vent, 4 in.

Durable aluminum goose neck vent for exhausting bath fans, range hoods, and similar appliances through the roof. Features a protective hood and screen to help keep pests and rain out while allowing efficient airflow.

Key Features:

  • Purpose-Built Venting: Ideal for bath fans, range hoods, and other appliance exhausts through the roof
  • Durable Aluminum Construction: Corrosion-resistant aluminum body for long-lasting performance
  • Integrated Hood and Screen: Helps deflect rain and keep debris and pests out of the duct
  • 4-Inch Connection: Fits standard 4 in. exhaust ducting for straightforward hookups
  • Low-Profile Design: 6-3/8 in. overall height for a clean roofline appearance

Specifications Table:

Specification Details
Brand GAF
Series/Line Master Flow
Product Type Goose Neck Roof Vent
Material Aluminum
Color/Finish Aluminum
Duct/Connection Diameter 4 in.
Overall Height 6-3/8 in.
Unit of Measure Each (EA)
Pieces per Carton 6
Manufacturer/Model Number GNV4A
Alternate Product Number GAFGNV4A
Item Weight 2 lb
Intended Use Venting appliances such as bath fans or range hoods; covering an exhaust pipe extending through a roof

Frequently Asked Questions (FAQ):

Q: What duct size does this vent fit?
A: It is designed for 4 in. diameter exhaust ducts.

Q: Can this be used for bathroom fans or range hoods?
A: Yes—it's intended for venting appliances like bath fans and range hoods through the roof.

Q: What material is it made from?
A: Aluminum, offering lightweight strength and corrosion resistance.

Q: Does it include a screen?
A: Yes, it includes an integrated screen beneath the hood to help keep pests and debris out.

Q: Is it sold individually?
A: Unit of measure is EA (each).

A Sleek, Low-Profile Cap for Clean, Efficient Rooflines

This aluminum goose neck vent introduces a crisp, architectural note to the roofline while quietly doing the heavy lifting of ventilation. The streamlined hood and tidy grid lend a refined, purposeful silhouette. Pair it with brushed metal accents or cool gray shingles for a cohesive exterior story. Essential, functional, and polished—it's the finishing touch for elevated curb appeal.

Upgrade your roof ventilation with this durable aluminum goose neck vent and enjoy efficient, worry-free exhaust performance.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45644481039

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4.3 ★★★★★
Based on 21 reviews
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EZ
Lowell, US
★★★★★ 5
Healthy, Effective, and great when mixed with Splenda and Koolaid mix. The best of many options I've tried.
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
I've sampled a few different varieties of fiber supplements, including both Benefiber and off-brands, and I found that Metamucil provided the most fiber in the least offensive beverage. Compared to the other brands, this stuff is smoother textured, and goes down easier, as a sort of happy medium between the grittier supplements and the thicker ones. What about effectiveness? I have apocalyptic IBS, and since starting to take this stuff regularly (one giant glass every morning and evening), my BMs have been much more regular, and more manageable. Flare-ups happen less, and it even seems to do a decent job when taken with meals of cutting the hit to my stomach and gut. I tend to take more than the recommended amount, with an even larger serving of water, as I feel like it helps me stay hydrated and full throughout the day. I started taking the classic orange Metamucil, but although I really liked the superior flavor (rather like Orange Tang) it packed several times more sugar in each serving than fiber, so while it was great for digestive health, the overall health impact was too negative. I also sampled the sugar-free berry flavors, but found that, although it was ostensibly healthier, the flavor wasn't great, and in addition it suffered from the aspartame aftertaste and further effects (Aspartame gives me headaches). So this was a dilemma for me. What to do? I actually wrote to Metamucil about it, and they recommended this product. The downside is that it comes with absolutely no flavor, so you need to provide your own in order to mask the texture (I wouldn't dream of trying to mix this in plain water--yuck!) The upside is they pack 100+ servings into a container, and you really are free to blend it into whatever suits your fancy. Obviously if you mix it with something like orange juice, then you're already negating the benefits of this stuff over the sugary orange flavor, but I've personally found a much better way. I like to mix this stuff with Kool-aid mix and Splenda (Sucralose) sweetener. I buy a ton of Splenda and kool-aid as it mixes up tasting sweet, like sugar, but without the calories or aftertaste. You can dump a spoonful of this stuff into a glass of splenda-koolaid, or just dump 8 servings worth of this stuff in with a packet of koolaid powder and a cup of splenda, and then just mix it up and spoon it into water as needed. Better tasting, sugar-free and packed with good useful fiber. EDIT: I wish I could subscribe to this stuff. Price of splenda has gone up, but I've figured out thatyou can just dump 7 packets of koolaid mix and 7 dashes of sucralose into a container of this and shake it up.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 26, 2015
R
Verified Purchase
Review Dude
Charlottesville, US
★★★★★ 5
#1 for #2's
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
I like the lack of sweeteners and flavor. I just want the stuff that helps me poop. There is some citric acid in it (no idea why) which gives it a mildly acidic taste. Other than that, it does the trick.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
S
Verified Purchase
Strathmont
Grantham, US
★★★★★ 5
Good Stuff
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
If you need more fiber in your diet, you need this. The price is right, it works very well and keeps me regular. I use this instead of the gummies or capsules. That's because you MUST put in in fluid, and hydration is SO important when using a psyllium product as it causes water to be absorbed very quickly once it is ingested, and you don't want to dehydrate! Mixes very well in water and has little to no taste whatsoever. Stay regular, stay hydrated and stay well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
R
Verified Purchase
Robert
Pawtucket, US
★★★★★ 4
Works well, but is now too expensive...
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
The "No added sweeteners" has been my go-to version of Metamucil, but I'm giving it 4 stars and moving on to another brand as the price is over $35 which is too much imo...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 15, 2025
S
Verified Purchase
S. E. Seater
New York, US
★★★★★ 5
I like the mildly tart taste of this unflavored, unsweetened drink made up with water.
Flavor Name: Unflavored, Size: 1.46 Pound (Pack of 1)
I like the mildly tart taste of this unflavored, unsweetened drink made up with water. The texture doesn't bother me, with stirring right from the beginning of adding the water, there is no clumping. After 10 days there is no effect on my bowels which were regular previously anyway. My doctor wanted me to use this although I already have a high fiber diet.
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Reviewed in the United States on April 25, 2026

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