SKU: 37317973806

GAF MasterFlow Square-Top Aluminum Roof Louver R50A, 15 in., Mill Finish, 50 Sq. In. NFVA

Sale price$19.59 Regular price$21.77
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Description

GAF MasterFlow Square-Top Aluminum Roof Louver R50A, 15 in., Mill Finish, 50 Sq. In. NFVAMasterFlow R50A Aluminum Roof Louver, Square Top Durable aluminum roof louver designed for utility and attic exhaust ventilation. The square top, square throat R50A provides 50 sq. in. of net free vent area and is suitable for roof pitches 3: 12 or greater. Key Features: Aluminum Construction: Corrosion resistant mill finish for long lasting rooftop performance Efficient Venting: 50 sq. in. Net Free Vent Area supports kitchen, bath, and attic exhaust

MasterFlow R50A Aluminum Roof Louver, Square-Top

Durable aluminum roof louver designed for utility and attic exhaust ventilation. The square-top, square-throat R50A provides 50 sq. in. of net free vent area and is suitable for roof pitches 3:12 or greater.


Key Features:

  • Aluminum Construction: Corrosion-resistant mill finish for long-lasting rooftop performance
  • Efficient Venting: 50 sq. in. Net Free Vent Area supports kitchen, bath, and attic exhaust needs
  • Square-Top Design: Low-profile cap with square throat helps shed weather while venting
  • Roof Pitch Compatibility: Rated for 3:12 or greater slopes for versatile installation
  • Certified Performance: Meets TDI RV-38, CSA, Florida Building Code, and Miami-Dade approvals

Specifications Table:

Specification Details
Manufacturer Model R50A
Brand GAF MasterFlow
Product Number GAFR50AMF
Base Material Aluminum
Finish/Color Mill Finish
Net Free Vent Area (NFVA) 50 sq. in.
Overall Dimension 15 in.
Height 4 in. (102 mm)
Allowable Roof Pitch 3:12 or greater
Style Square-top with square throat
Category Ventilation and Drainage
Applicable Standards/Approvals Texas Department of Insurance Evaluation RV-38; CSA Certified; Florida Building Code Approved; Miami-Dade County Approved
Applications Kitchen duct outlets, bathroom fan exhausts, attic exhaust ventilation

Frequently Asked Questions (FAQ):

Q: What roof pitches can this louver be installed on?
A: It is suitable for roof slopes of 3:12 or greater.


Q: What is the net free vent area (NFVA)?
A: 50 square inches of NFVA.


Q: Is the louver approved for use in high-wind regions?
A: Yes. It has Texas Department of Insurance Evaluation RV-38, Florida Building Code approval, Miami-Dade County approval, and is CSA certified.


Q: What materials is it made from?
A: Aluminum with a mill finish for corrosion resistance.


Q: What applications is it recommended for?
A: Utility vent for kitchen duct outlets, bathroom fan exhausts, and attic exhaust ventilation.


A Sleek, Architectural Cap for Clean Rooflines

The square-top silhouette lends a crisp, modern punctuation to the roof—quietly refined yet highly functional. Its mill-finish aluminum catches light with a soft sheen, harmonizing with both contemporary and classic exteriors. Use it to streamline visible exhaust points for kitchens and baths, keeping the roofscape cohesive and uncluttered. It’s a discreet essential that elevates performance and polish in one gesture.


Upgrade your roof ventilation with this durable, code-approved aluminum louver and enjoy reliable exhaust performance with a clean, modern profile.

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: 37317973806

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4.2 ★★★★★
Based on 17 reviews
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Stephen Reddy
Massapequa, US
★★★★★ 5
Great product 😎
Im very picky about what products I use , but ever since using this one I really like the way it feels cool on the skin. I would recommend buying this especially if you have Eczema or just looking for something to apply for daily use .
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Reviewed in the United States on June 4, 2026
D
Verified Purchase
D. Pryce
Birmingham, US
★★★★★ 4
Burns
Maybe once you get your eczema under control with some other product, you can use this for maintenance, but it's an absolute misery if you have a bad outbreak of eczema. I have no idea why this thing has alcohol in it but it burns like a star when you put it on severely irritated skin. Note: I originally gave this 3 stars, but Eczema Honey reached out to me to offer a refund. I didn't take it, but I appreciated that they *would* do that. Plus, my acute outbreak has subsided and it's perfectly fine to use now, so just be warned it hurts to apply if you have an active eczema flareup!
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Reviewed in the United States on July 29, 2025
R
Verified Purchase
RuRu
Whiting, US
★★★★★ 5
Absolutely worth the money!!
I'm 38 and I've never had eczema but I did always have sensitive skin. About a week ago I noticed a dry patch under my eyelid and boy did it flare up very quickly. I tried several plant based products for eczema but it just burned. I decided this product would be my final purchase before going to urgent care. I received this product 2 days ago. After reading the reviews I decided to slowly add this to my skin. Now it did burn on the part that was super worse than the other so I made sure to put very thin amounts till my skin could handle a thick application. Id say I put the cream on about 6times the first day by the next day I could already see the difference the swelling and redness went away. The second day I did the same no more slight burning my skin is still dry but it is healing. I would definitely give it a try if you're experiencing eczema for your first time!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 28, 2025
T
Verified Purchase
Tricia Baker
Alexandria, US
★★★★★ 5
Itch-Free Face :)
This cream made a difference day one! It soothed the skin around my eyes and eyelids plus on my face. I forgot to wash my face one night and my skin was still outbreak free and felt so smooth. I haven't had itchy skin since I started using this cream. I would definitely recommend to a friend.
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Reviewed in the United States on April 22, 2026
J
Verified Purchase
Jennifer Maldonado
Omaha, US
★★★★★ 1
Ouch! I paid WHAT for this?
This "eczema cream" contains alcohol. It says you can use it on your face and body. I applied the cream to my face and it burned my eyes. I then read that the ingredients contain alcohol. It did NOT help with my eczema at all. Everyone's skin is different, but I personally was very disappointed especially at $20 for 2oz. that the product ingredients were not soothing, burned my eyes, and dried out my skin more than it already was.
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Reviewed in the United States on April 17, 2026

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