MasterFlow Vents - MasterFlow Roof Louvers

Master Flow® Roof Louvers (Exhaust)*

For those who prefer roof louvers (or where existing roof louvers are being replaced), Master Flow® offers a complete line of quality choices.. In fact, we’re so confident in the performance of our louvers that we offer a four-year ltd. warranty! When you compare our features and warranty to any other brand on the market, Master Flow® louvers are the obvious choice!

*See MasterFlow® Non-Powered Ventilation Products Ltd. Warranty for complete coverage and restrictions.

Good Housekeeping


SSB960A/SSB960G

Our Best Metal Roof Louver, with fully enclosed hood to help prevent rodent/insect infiltration and leaf/pine needle clogging

  • Slant-Back Design...
    An excellent choice against weather infiltration, especially in steep-slope applications
     
  • Long Lasting Construction...
    Available in aluminum (SSB960A) or galvanized (SSB960G) construction
     
  • 20% More Ventilating Capacity**...
    A full 60 sq. in. of net free ventilating area (NFA) per vent
     
  • Optional Weather Filter...
    helps resist virtually all types of weather infiltration (available on aluminum models)
     
  • Lower Installation Costs...
    Fewer vents needed for installation**
     
  • Easy Installation...
    Pre-drilled nail holes make installation easier
     
  • Popular Colors Available...
    To complement most roofs
    • Aluminum: Mill, Black, Brown, Weathered Wood, White and ShingleMatch™ Weathered Wood
    • Galvanized: Black, Brown and Weathered Wood
    • Granule Coated: Black, Brown, Weathered Wood and Shakewood

     

** Compared to typical 50 sq. in. NFA roof vents

SSB960A
Now available in 4 granule coated colors

How Many Do I Need? (Based on 1/300 Rule)


Total Attic
Square Footage
Recommended Number of
SSB960 Louvers
Minimum Intake Ventilation
(Net Free Area
In Sq. In.)
0-1000
4
240
1001-1500
6
360
1501-2000
8
480
2001-2500
10
600
2501-3000
12
720

Texas Department of Insurance
Product Evaluation RV-38 †
Florida Building Code FL †


SAMiami Dade

† Aluminum (SSB960A) Only



IR65

Our Best High-Impact Resin Roof Louver with superior resistance against dents and scratches

  • Slant-Back Design For Superior Performance...
    Best choice against weather infiltration, especially in steep-slope applications
     
  • High Impact Resin Construction...
    With UV inhibitors to maintain consistent color
     
  • 30% More Ventilating Capacity*...
    A full 65 sq. in. of net free ventilating area (NFA) per vent
     
  • Less Hassles...
    Scratch, crush, and dent resistant
     
  • Lower Installation Costs...
    Fewer vents needed for roof installation*        
     
  • 4 Popular Colors...
    To complement most roofs (Black, Brown, Gray,
    Weathered Wood)
     
  • Professional’s Choice...
    12% larger flashing with pre-drilled nail holes make installation easier, helps prevent leaks
     
  • Unique, Built-In Screen...
    Helps deter bird and rodent infiltration; prevents clogging from leaves and pine needles
     
  • Hood Stays In Place...
    Hood is securely snapped in place (rather than tacked) to reduce chance of blow-off

*Compared to typical 50 sq. in. NFA vents

IR65

How Many Do I Need? (Based on 1/300 Rule)


Total
Attic Square
Footage
Recommended Number of IR65 Louvers
Minimum Intake Ventilation
(Net Free Area In Sq. In.)
0-1000
4
260
1001-1500
6
390
1501-2000
8
520
2001-2500
10
650
2501-3000
12
780

Texas Department of Insurance
Product Evaluation RV-61

SA



RT-65

Square-Top Resin Construction

  • Large Capacity...
    Full 60 sq. in. of net free ventilating area (NFA) per vent
     
  • Less Hassles...
    Scratch, crush, and dent resistant
     
  • 4 Popular Colors...
    To complement most roofs (Black, Brown, Gray,
    Weathered Wood)
     
  • Easier To Install...
    Pre-drilled nail holes with extra wide flashing area
     
  • Homeowner’s Choice...
    High-impact resin construction looks great for years

  • UV Inhibitors...
    Help to maintain consistent color
RT-65

How Many Do I Need? (Based on 1/300 Rule)


Total Attic
Square Footage
Recommended Number of RT-65 Louvers
Minimum Intake Ventilation
(Net Free Area
In Sq. In.)
0-1000
4
240
1001-1500
6
360
1501-2000
8
480
2001-2500
10
600
2501-3000
12
720

Texas Department of Insurance
Product Evaluation RV-61

SA



IR-61

Super-Low Profile, Slant-Back Resin Construction

  • Sleek Design...
    Super-low profile (just 2" high!) for better appearance
     
  • Homeowner’s Choice...
    High-impact resin construction looks great for years
     
  • 4 Popular Colors...
    To complement most roofs (Black, Brown, Gray,
    Weathered Wood)
     
  • Easier To Install...
    Pre-drilled nail holes make installation easier

  • UV Inhibitors...
    Help to maintain consistent color
IR-61

How Many Do I Need? (Based on 1/300 Rule)


Total
Attic Square
Footage
Recommended Number of IR-61 Louvers
Minimum Intake Ventilation
(Net Free Area In Sq. In.)
0-1000
7
259
1001-1500
10
370
1501-2000
13
481
2001-2500
17
629
2501-3000
20
740

Texas Department of Insurance
Product Evaluation RV-61




RV50A/RV50G & R50A

Square-Top Metal Utility Vent

  • The Perfect Utility Vent...
    for kitchen duct outlets, bathroom fan exhausts and attic exhaust ventilation
     
  • Optional Throat Design & Construction…
    • Round Throat: Aluminum (RV50A) or Galvanized (RV50G)
    • Square Throat: Aluminum (R50A)
     
  • Large Capacity...
    Full 50 sq. in. of net free ventilating area (NFA) per vent
     
  • Popular Colors...
    To complement most roofs (Black, Brown, Mill, Weathered Wood)
     
R50A

How Many Do I Need? (Based on 1/300 Rule)


Total
Attic Square
Footage
Recommended Number of RV50/R50 Louvers
Minimum Intake Ventilation
(Net Free Area In Sq. In.)
0-1000
5
250
1001-1500
8
400
1501-2000
10
500
2001-2500
12
600
2501-3000
15
750


SA (R50A Only)


Documents

All documents are U.S. English unless otherwise noted


Professional Installation

GAF Roof Wizard
Virtual Home Remodeler


Product Pricing and Where to Buy