Operating Guide

18
19
Roof & Gable Louvers
Gable Louvers – Intake /Exhaust Ventilation
IR61
Low-Profile Resin Slant-Back Roof Louver
RLSC Plastic
Circular Louvers
RLSC Series
• Sleek Design... Super-low profile for better appearance
• Good Ventilator... Full 37 sq. in. of net free ventilating area
(NFA) per vent
• Homeowner’s Choice... High-impact resin construction
looks great for years
• 4 Popular Colors... To complement most roofs (Black, Brown,
Gray, Weathered Wood)
• Easy To Install... Pre-drilled nail holes make installation easier
• UV Inhibitors... Help to maintain consistent color
• Easy To Install... Just cut appropriate-sized hole and snap
in place!
• One-Piece Design... White, high-impact plastic construction
for long life
• Durable... Contains UV inhibitors for long-lasting durability
(R50A only)
RV50A/RV50G & R50A
Square-Top Metal Utility Vents
• Perfect Utility Vents... For kitchen duct outlets, bathroom fan
exhausts, and attic ventilation
• Large Capacity... Full 50 sq. in. of net free ventilating area (NFA)
per vent
• Optional Throat Design & Construction Available...
Round Throat: Aluminum (RV50A) or galvanized (RV50G)
Square Throat: Aluminum (R50A)
• Popular Colors... To complement most roofs (Black, Brown, Mill,
Weathered Wood)
Aluminum & Plastic
Gable Louvers
DA & SL Series
• Aluminum Gable Louvers... Available in painted white or
unfinished metal (DA Series)
• Thermoformed Plastic Gable Louvers...
One-piece integral
louvered construction provides exceptional strength and
eliminates the need for a screen (SL Series)
• Sleek Design... For flush or recessed installation!
(See page 19 for sizes and specifications)
Thermoformed plastic construction shownAluminum construction shown
For use in intake or exhaust applications, Master Flow
®
offers a
line of versatile plastic and aluminum gable louvers, as well as
the perfect solution for hard-to-ventilate or restricted areas —
our circular louvers. (See page 19 for sizes and specifications)
Recommended for hard-to-ventilate or other restricted areas
(Aluminum only)
SSB960A / SSB960G RV50A/RV50G & R50A
IR65 Aluminum Gable Louvers
RT65
IR61
Roof Louver Size & Color Chart
RLSC Series Circular Louvers
PRODUCT SPECIFICATIONS & USAGE RECOMMENDATIONS (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
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
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
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
Mill Brown Black Weathered Wood ShingleMatch
™
Weathered Wood
Gray White Shakewood Construction Opening Size Flashing
Dimensions
Height NF
A
(Sq. In.)
SSB960A SSB960ABR SSB960ABL SSB960AWW SSB960ASMWW – SSB960AW – Aluminum 10" 16" x 20.5" 5
1
/
2
" 60
SSB960AWF SSB960AWFBR SSB960AWFBL SSB960AWFWW – – SSB960AWFW – Aluminum w/ Weather
Filter
10" 16" x 20.5" 5
1
/
2
" 60
– SSB960ASCBR SSB960ASCBL SSB960ASCWW – – – SSB960ASCSW Aluminum w/ Granule
Coating
10" 16" x 20.5" 5
1
/
2
" 60
– SSB960GBR SSB960GBL SSB960GWW – – – – Galvanized 10" 16" x 20.5" 5
1
/
2
" 60
– IR65BR IR65BL IR65WW – IR65G – – High-Impact Resin 11
3
/
4
" x 10
3
/
4
" 20
1
/
4
" x 18" 5
7
/
8
" 65
– RT65BR RT65BL RT65WW – RT65G – – High-Impact Resin 11
1
/
8
" x 10" 18
1
/
2
" x 18" 4" 60
– IR61BR IR61BL IR61WW – IR61G – – High-Impact Resin 11
3
/
4
" x 9
3
/
4
" 18
1
/
2
" x 17
1
/
2
" 4
1
/
4
" 37
R50A R50ABR R50ABL R50AWW – – – – Aluminum 9" x 9" 17
3
/
8
" x 15
3
/
8
" 4" 50
RV50G RV50GBR RV50GBL RV50GWW – – – – Galvanized 9" 15" x 16
1
/
2
" 4" 50
RV50A RV50ABR RV50ABL RV50AWW – – – – Aluminum 9" 15" x 16
1
/
2
" 4" 50
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
Model
Number
Opening
Dimensions
Overall
Dimensions
NFA
(Sq. In.)
DA12x12 12" x 12" 14
1
/
2
" x 14
5
/
8
" 60
DA12x18 12" x 18" 14
1
/
2
" x 20
1
/
2
" 90
DA14x24 14" x 24" 16
1
/
2
" x 26
3
/
8
" 141
DA18x24 18" x 24" 20
1
/
2
" x 26
3
/
8
" 181
DA24x30 24" x 30" 26
1
/
2
" x 32
1
/
4
" 302
Model
Number
Opening
Dimensions
Overall
Dimensions
NFA
(Sq. In.)
SL8x8 8" x 8" 10
1
/
2
" x 10
1
/
2
" 17
SL12x12 12" x 12" 14
1
/
2
" x 14
1
/
2
" 43
SL12x18 12" x 18" 14
1
/
2
" x 20
1
/
2
" 65
SL18x24 18" x 24" 20
3
/
4
" x 26
3
/
4
" 141
Model
Number
Size NFA
(Sq. In.)
RLSC2 2" 1.50
RLSC3 3" 3.20
RLSC4 4" 5.17
Note: Always have a balanced attic ventilation system. The amount of exhaust ventilation should NEVER exceed the amount of
intake ventilation.
Note: Add “W” to model number for painted white.
Note: Minimum roof pitch is 3:12
Texas Department of
Insurance Evaluation
RV-61
Thermoformed Plastic Gable Louvers