Skip to content
GAF MasterFlow RV50G Galvanized Square-Top Roof Louver Vent with Round Throat, 50 sq. in. NFA, Brown
Regular price $30.75Orders start at $399 — combine any items to reach the minimum. Learn more
GAF MasterFlow RV50G Galvanized Square-Top Roof Louver Vent with Round Throat, 50 sq. in. NFA, Brown
This is a GAF Master Flow RV50G galvanized square-top metal utility roof louver with round throat in Brown, providing 50 sq. in. of net free ventilating area per vent. Each vent measures 15 in. x 16-1/2 in. x 4 in. and is for attic exhaust ventilation on roofs with 3:12 pitch or greater. Sold per piece; cartons contain 12.
Key Features:
- Exhausts attic heat: Helps exhaust heat and moisture from the attic, kitchen or bathroom to reduce interior heat.
- 50 sq. in. NFA: Provides a full 50 sq. in. of net free ventilating area per vent.
- Galvanized build: Durable galvanized steel construction with a round throat.
- Brown finish: Finished in Brown to complement most roof colors.
- Low pitch capable: Suitable for roofs with allowable pitch of 3:12 or greater.
- Code listed: TDI Evaluation RV-38, CSA Certified, Florida Building Code and Miami-Dade County Approved.
- Warranty eligible: Eligible accessory in the Attic Ventilation category of GAF Residential Enhanced and WindProven limited warranties.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | GAF |
| Manufacturer model | RV50GBR |
| Sell unit | 1 vent (cartons of 12) |
| Product line | Master Flow RV50G |
| Profile / style | Square-top metal utility vent, round throat |
| Color | Brown |
| Dimensions | 15 in. x 16-1/2 in. x 4 in. |
| Height | 4 in. |
| Net free vent area | 50 sq. in. |
| Material | Galvanized steel |
| Allowable roof pitch | 3:12 or greater |
| Pack quantity | 12 per box / 12 per carton |
| Weight | 2.67 lb per vent |
| Approvals | TDI Evaluation RV-38; CSA Certified; Florida Building Code Approved; Miami-Dade County Approved |
| Intended use | Attic, kitchen or bathroom exhaust ventilation |
Fit and Compatibility:
Works with GAF shingle roofing systems and qualifies as an attic ventilation accessory in GAF Residential Enhanced and WindProven limited warranties when installed with qualifying GAF products. Replacement of existing roof louvers of the same footprint is straightforward; starter strips, ridge caps and other system components are sold separately.
Frequently Asked Questions (FAQ):
Q: What is included in one order?
A: One Brown galvanized RV50G square-top roof vent; full cartons contain 12 vents.
Q: How many vents do I need?
A: Each vent provides 50 sq. in. of NFA; use GAF's ventilation calculator to balance exhaust against soffit intake area.
Q: What roof pitches does it fit?
A: It is rated for roofs with 3:12 pitch or greater.
Q: What is it made of?
A: Galvanized steel with a round throat, finished in Brown.
Q: Can it replace an old louver?
A: Yes, it is useful for replacing existing roof louvers or on roofs with limited ridge line.
Q: Does it count toward GAF warranties?
A: It is an eligible accessory in the Attic Ventilation category of GAF Residential Enhanced and WindProven limited warranties with qualifying GAF products.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
This square-top louver is a good choice when ridge ventilation is limited or you are replacing an existing metal roof louver. Always balance exhaust NFA with soffit intake; excess ridge or louver exhaust without intake can draw conditioned air from the living space. Keep the Brown finish in mind for visibility against the shingle color, and install per GAF instructions with proper flashing on decks of 3:12 pitch or greater.
Cut metal edges are sharp; wear gloves, use fall protection on the roof, and follow GAF installation instructions and local code.
Order the GAF Master Flow RV50G Brown galvanized roof vent for dependable attic exhaust ventilation.
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
