SKU: 37317973806

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

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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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Based on 15 reviews
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M
Verified Purchase
Mom of Two
Pawtucket, US
★★★★★ 4
Great chair for the price!
Color: Black
Great chair for the price. Bought for my son and he loves it. Easy to assemble. Good support.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 5
Nice chair
Color: Black
This chair suits my needs for my home office. Less expensive than most I looked at and very comfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
A
Verified Purchase
Awesome reviews
Waukegan, US
★★★★★ 5
Make sure you know the difference of high back vs mid back versions
Color: Brown, Size: Mid Back
I got a little confused by the reviews since they mix the high back version with the mid back. I thought the arm rests were adjustable and the back had some lean. Apparently only the high back version. That said, it is very nice. Its at least a hundred less than what you'd get at an office depot and it is generously sized and very supportive and comfortable. The assembly was relatively easy, instructions could have been a bit better. The piece connecting the seat and back doesn't sit flush with the mount that attached to the legs which is weird but it feels sturdy nonetheless. Overall it's very nice and the design is really cool, it looks like a 70s race car style seat. Exactly what I was looking for basically. I sort of wish I got the high back version for the adjustable arms and the ability to recline but it is a work chair for me mostly so I guess it doesn't need to lean back, even if it would be nice if it did.
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Reviewed in the United States on January 14, 2026
A
Verified Purchase
Andre
New York, US
★★★★★ 5
Excellent product. Great value, detailed parts and labels, outstanding construction.
Color: Brown, Size: Mid Back
Outstanding Purchase. The desk chair far exceeded my requirements and expectations. The price was so far below other office chairs that I was concerned that it would be shoddy, uncomfortable, cheap looking and impossible to put together. Materials were top grade, instructions were precise and all parts were market for location with "front and back" labels. Not a screw was missing or misaligned. Since my desk and office are in the Master, really impressed with the color and design. Very comfortable with good back support ,adjustment ease and arm support.. Bravo to your team!!!
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Reviewed in the United States on February 20, 2026
H
Verified Purchase
H
Carnegie, US
★★★★★ 5
Lovely and comfortable
Color: Brown, Size: Mid Back
Well made and easy to put together. I bought 2 and found them both to be well worth the money. You can tell the quality is there vs. other chairs I’ve bought online before.
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Reviewed in the United States on May 6, 2026

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