GAF MasterFlow RV50G Galvanized Square-Top Metal Utility Vent with Round Throat, Black, 50 Sq. In. NFVA

GAF MasterFlow RV50G Galvanized Square-Top Metal Utility Vent with Round Throat, Black, 50 Sq. In. NFVA

Regular price $215.82

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MasterFlow RV50G Galvanized Square-Top Utility Vent

The GAF MasterFlow RV50G is a galvanized steel square-top roof louver with a round throat, ideal for bathroom fans, kitchen ducts, and general attic exhaust. It delivers 50 sq. in. of net free vent area and is approved for use on roof pitches 3:12 or greater.


Key Features:

  • Durable Galvanized Construction: Metal housing withstands weather and resists corrosion for long service life.
  • Utility Exhaust Versatility: Suitable for kitchen duct outlets, bathroom fan exhausts, and attic ventilation.
  • Efficient Airflow: Provides 50 sq. in. Net Free Vent Area (NFVA) to help move air out of the home.
  • Pitch Compatibility: Designed for roofs with 3:12 pitch or greater.
  • Tested and Approved: Meets Texas Department of Insurance RV-38, CSA, Florida Building Code, and Miami-Dade approvals.

Specifications Table:

Specification Details
Series RV50G
Color Black
Material Galvanized steel
Style Square-top roof louver with round throat
Net Free Vent Area (NFVA) 50 sq. in.
Allowable Roof Pitch 3:12 or greater
Applicable Standards/Approvals Texas Department of Insurance Evaluation RV-38; CSA Certified; Florida Building Code Approved; Miami-Dade County Approved
Item Weight 2.6667 lb
Pieces per Carton 12
Manufacturer Number RV50GBL
Product Number GAFRV50GBL
Height 4 in (102 mm)

Frequently Asked Questions (FAQ):

Q: What roof pitches can this vent be installed on?
A: It is suitable for roofs with a pitch of 3:12 or greater.


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


Q: What applications is this vent designed for?
A: It’s designed for utility exhaust such as bathroom fans, kitchen ducts, and general attic ventilation.


Q: What material is the vent made from?
A: Galvanized steel for durability and corrosion resistance.


Q: Is it code approved?
A: Yes—Texas Department of Insurance RV-38, CSA certified, Florida Building Code approved, and Miami-Dade County approved.


A Clean, Crafted Capstone for Functional Venting

This square-top vent strikes a crisp, architectural note while quietly managing the movement of air. The galvanized finish lends an industrial refinement that complements modern and traditional roofs alike. Pair it with matte-black flashings and streamlined fixtures for a cohesive, elevated exterior palette. Consider it a polished essential—where purposeful engineering meets effortless curb appeal.


Upgrade your roof ventilation with the durable, code-approved MasterFlow RV50G and keep your home breathing easy.

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