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Adjustable Elbow (2)
Air Vent (4)
Boot (2)
Cap (3)
Collar (38)
Damper (6)
Drive Cleat (1)
Duct Cap (3)
Duct Wrap (2)
Elbow (10)

Price Range

$1 to $5 (2)
$5 to $10 (41)
$10 to $15 (40)
$15 to $20 (45)
$20 to $25 (15)
$25 to $30 (20)
$30 to $35 (5)
$35 to $40 (7)
$40 to $45 (1)
$45 to $50 (3)

GAF Master Flow

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Product Image of 30" Master Flow Replacement Aluminum Automatic Whole House Fan Shutter
$135.98 each
In Stock
Get 6 by Wed, Jun 10
In Stock
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Product Image of 10" x 8" Master Flow Ductboard R6-Insulated Register Box
$26.26 each
In Stock
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Product Image of 18" Master Flow Starting Collar, LSC18
$29.99 each
In Stock
Get 3 by Wed, Jun 10
In Stock
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Product Image of 14" x 6" to 8" Register Box, RB14X6X8
$15.99 each
In Stock
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Product Image of 60 ft. R-8 Insulated Duct Wrap, INSWRP60R8
$97.00 each
In Stock
Get 13 by Fri, Jun 12
In Stock
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Product Image of 10" x 3-1/4" to 4" Stack Boot
10" x 3-1/4" to 4" Stack Boot
SKU: SB10X3.25X4
GAF Master Flow
SKU: SB10X3.25X4
$16.01 each
In Stock
Get 17 by Wed, Jun 10
In Stock
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Product Image of Master Flow Green Machine High-Power Hybrid Solar/House Power Roof Vent (750/900 CFM)
$473.49 each
In Stock
Get 6 by Wed, Jun 10
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Product Image of 10" x 60" Round Metal Duct Pipe, CP10X60
$25.99 each
In Stock
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Product Image of 6" Air-Tite Take-Off w/ Damper, ATTOD6
$29.99 each
Out of Stock
Get it by Tue, Jun 23 - Tue, Jun 30
Out of Stock
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Product Image of 20" Master Flow Replacement Automatic Gable Mount Fan Shutter
$61.44 each
In Stock
Get 5 by Wed, Jun 10
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Product Image of Master Flow Gable Mount Power Attic Vent Fan (1600 CFM)
$146.51 each
In Stock
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In Stock
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Product Image of Master Flow 1/3 HP Replacement Whole House Fan Motor
$191.70 each
In Stock
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Product Image of 10" Air-Tite Take-Off w/ Damper, ATTOD10
$32.99 each
Out of Stock
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Out of Stock
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Product Image of 12" x 12" Ductboard R6-Insulated Register Box, DIRB12X12
$29.99 each
In Stock
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Product Image of 14" Flexible Duct Connector, FC14-GAF
$25.99 each
In Stock
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In Stock
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Product Image of Bath & Dryer Rooftop Appliance Vent (Black), BDV4BL
$78.95 each
In Stock
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Product Image of 60 ft. R-6 Insulated Duct Wrap, INSWRP60
$82.00 each
In Stock
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In Stock
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Product Image of 12" x 4" to 6" Register Box, RB12X4X6
$12.99 each
In Stock
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In Stock
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Product Image of 10" x 6" Rectangular Stack Head
$15.94 each
In Stock
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In Stock
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Product Image of 16" Flexible Duct Connector, FC16-GAF
$26.49 each
In Stock
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In Stock
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Product Image of 5" Round Duct Cap, DC5
$7.45 each
In Stock
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In Stock
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Product Image of 10" Damper, D10
$12.99 each
In Stock
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In Stock
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Product Image of 7" x 5' Master Flow Beaded Metal Duct Pipe
$18.98 each
In Stock
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In Stock
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Product Image of 4" White Plastic Under Eave Vent, BFEV4
$8.99 each
In Stock
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In Stock
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Product Image of 3" Adjustable Elbow - 30 Gauge (90-Degree)
$6.25 each
In Stock
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In Stock
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Product Image of 10" x 6" to 6" End Register Box, ERB10X6X6
$15.49 each
In Stock
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In Stock
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Product Image of 12" Damper, D12
$14.99 each
In Stock
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In Stock
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Product Image of 4" Master Flow Starting Collar
$5.76 each
In Stock
Get 28 by Wed, Jun 10
In Stock
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Product Image of 12" x 6" to 6" Register Box, RB12X6X6
$13.99 each
In Stock
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In Stock
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Product Image of 12" x 6" to 6" Insulated Register Box, IRB12X6X6
$23.99 each
In Stock
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Product Image of 6" 30 Ga Galvanized Connector Tee, T6X6X6
$18.29 each
In Stock
Get 17 by Thu, Jun 11
In Stock
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Product Image of 3" Pivot Pipe Boot Flashing - 26 Gauge (Black), PPBG3BL
$62.95 each
In Stock
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Product Image of 5" Adjustable Elbow - 26 Gauge (90-Degree), 26B90E5
$7.99 each
In Stock
Get 17 by Wed, Jun 10
In Stock
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Product Image of 10" x 6" to 6" Insulated Register Box, IRB10X6X6
$21.99 each
In Stock
Get 24 by Wed, Jun 10
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Product Image of 7" Flexible Duct and Sheet Metal Connector Splice Collar, FC7
$17.99 each
In Stock
Get 5 by Thu, Jun 11
In Stock
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Product Image of 5" x 5' Master Flow Beaded Metal Duct Pipe
$17.31 each
Out of Stock
Get it by Tue, Jun 23 - Tue, Jun 30
Out of Stock
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Product Image of Master Flow 1/4 HP Replacement Whole House Fan Motor
$212.84 each
In Stock
Get 2 by Wed, Jun 10
In Stock
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Product Image of 3.25" x 10" Rectangular Duct Cap, DC3.25X10
$6.99 each
In Stock
Get 16 by Wed, Jun 10
In Stock
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Product Image of 3.25" x 10" Rectangular Stack Duct w/ Starting Collar, SCF3.25X10
$14.98 each
In Stock
Get 13 by Wed, Jun 10
In Stock
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Product Image of 10" x 10" Ductboard R6-Insulated Register Box, DIRB10X10
$24.49 each
In Stock
Get 14 by Wed, Jun 10
In Stock
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Product Image of 4" Damper, D-4
$5.99 each
In Stock
Get 15 by Wed, Jun 10
In Stock
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Product Image of 8" x 4" Master Flow Ductboard R6-Insulated Register Box
$23.09 each
In Stock
Get 16 by Wed, Jun 10
In Stock
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Product Image of 4" to 3" Galvanized Round Reducer, R4X3
$11.49 each
In Stock
Get 17 by Thu, Jun 11
In Stock
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Product Image of 5" x 24" Round Metal Duct Pipe, BCP5X24
$7.49 each
In Stock
Get 5 by Thu, Jun 11
In Stock
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Product Image of 6" Fresh Air Intake Vent, FAV6
$33.99 each
In Stock
Get 28 by Thu, Jun 11
In Stock
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Product Image of 7" Adjustable Elbow - 26 Gauge (90-Degree), 2690E7
$10.49 each
In Stock
Get 24 by Thu, Jun 11
In Stock
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Product Image of 12" x 4" to 6" End Register Box, ERB12X4X6
$15.99 each
In Stock
Get 1 by Thu, Jun 11
In Stock
Get 1 by Thu, Jun 11
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Product Image of 18" Flexible Duct Connector, FC18
$27.99 each
In Stock
Get 5 by Wed, Jun 10
In Stock
Get 5 by Wed, Jun 10
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More About GAF Master Flow
More homes and businesses in the U.S. are protected by a GAF roof than by any other product. GAF is the leading roofing manufacturer in North America, with plants strategically located across the U.S. As a Standard Industries company, GAF is part of the largest roofing and waterproofing business in the world.

Diverse, equitable, and inclusive teams are at the heart of leadership at GAF, North America's largest roofing manufacturer. GAF is committed to fostering a culture that reflects their values to connect, empower, evolve, and inspire where they embrace.