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Adjustable Elbow (2)
Air Vent (4)
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Duct Wrap (2)
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GAF Master Flow

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Product Image of 10" x 6" Master Flow Ductboard R6-Insulated Register Box
$25.20 each
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
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Product Image of 20" Master Flow Replacement Automatic Gable Mount Fan Shutter
$74.60 each
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Product Image of 5" x 24" Round Metal Duct Pipe, BCP5X24
$7.52 each
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Product Image of 2" Pivot Pipe Boot Flashing - 26 Gauge (Black), PPBG2BL
$49.95 each
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Product Image of 9" Master Flow Starting Collar, LSC9
$21.12 each
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Product Image of 7" Starting Collar w/ Damper, DSCFD7
$31.20 each
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Product Image of 8" x 8" Ductboard Insulated Register Box, DIRB8X8
$23.37 each
In Stock
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Product Image of 4" Pivot Pipe Boot Flashing - 26 Gauge (Black), PPBG4BL
$67.19 each
In Stock
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Product Image of 3" Adjustable Elbow - 30 Gauge (90-Degree)
$6.77 each
In Stock
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Product Image of 10" x 6" Rectangular Stack Head
$15.94 each
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 12" Starting Collar w/ Damper, DSCFD12
$40.28 each
In Stock
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Product Image of 4" Fresh Air Intake Vent, FAV4
$27.92 each
Out of Stock
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Product Image of 3.25" x 10" Rectangular Galvanized Duct Elbow, 90E3.25X10
$14.08 each
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Product Image of 12" x 2.25" to 6" Register Box (90-Degree), 90RB12X2.2X6
$12.06 each
In Stock
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Product Image of 8" x 24" Round Metal Duct Pipe, BCP8X24
$10.06 each
In Stock
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Product Image of 1-3/4" x 100 Yds. Black Woven Vinyl Hanger Strap, HS1.75WV
$25.85 each
In Stock
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Product Image of 3.25" x 10" x 7" Fan Boot, FB3.25X10X7
$17.10 each
In Stock
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Product Image of 7" x 5' Master Flow Beaded Metal Duct Pipe
$20.67 each
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Product Image of Master Flow Green Machine High-Power Hybrid Solar/House Power Roof Vent (750/900 CFM)
$529.74 each
In Stock
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Product Image of Master Flow 1/4 HP Replacement Whole House Fan Motor
$227.03 each
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Product Image of 9" Flexible Duct Connector, FC9
$19.30 each
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Product Image of 4" Master Flow Starting Collar
$5.76 each
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Product Image of Master Flow Silver Quick Connect Gable Mount Power Attic Vent Fan (1450 CFM)
$233.46 each
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Product Image of 12" x 8" Ductboard R6-Insulated Register Box, DIRB12X8
$29.69 each
In Stock
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Product Image of 14" Damper, D14
$16.99 each
In Stock
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Product Image of 6" Roof Flashing w/ Tapered Stack, RFTS6
$20.91 each
In Stock
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Product Image of 3.25" x 12" x 3' Half Section Rectangular Stack Duct, RD3.25X12X36
$17.09 each
In Stock
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Product Image of 10" x 3.25" to 5" Stack Boot, SB10X3.25X5
$15.61 each
In Stock
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Product Image of 7" x 2' Round Metal Duct Pipe, 26CP7X24
$17.99 each
In Stock
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Product Image of 10" Starting Collar w/ Damper, DSCFD10
$37.25 each
In Stock
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Product Image of 5" Starting Collar w/ Damper, DSCFD5
$28.19 each
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Product Image of Bath & Dryer Rooftop Appliance Vent (Grey), BDV4GR
$78.95 each
In Stock
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Product Image of 1.5" Pivot Pipe Boot Flashing - 26 Gauge (Black), PPBG1.5BL
$49.95 each
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Product Image of Bath & Dryer Rooftop Appliance Vent (Weathered Wood), BDV4WW
$78.95 each
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Product Image of 3" x 24" Round Metal Duct Pipe, BCP3X24
$6.02 each
Out of Stock
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Product Image of 6" x 6" Ductboard R6-Insulated Register Box, DIRB6X6
$23.15 each
In Stock
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Product Image of 5" Adjustable Storm Collar, SMC5
$14.99 each
In Stock
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Product Image of 6" x 5' Round Oval Duct Pipe, OP6X60
$17.98 each
Out of Stock
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Product Image of 8" x 4" Master Flow Ductboard R6-Insulated Register Box
$23.09 each
In Stock
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Product Image of 24" Master Flow Replacement Aluminum Automatic Whole House Fan Shutter
$115.00 each
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Product Image of Bath & Dryer Rooftop Appliance Vent (Brown), BDV4BR
$78.95 each
In Stock
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Product Image of 5" Flexible Duct Connector, FC5-GAF
$15.99 each
In Stock
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Product Image of 5" x 5' Master Flow Beaded Metal Duct Pipe
$16.98 each
In Stock
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Product Image of 12" x 6" Ductboard R6-Insulated Register Box, DIRB12X6
$26.66 each
In Stock
Get 29 by Fri, Nov 13
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Product Image of 3.25" x 14" x 5' Half Section Rectangular Stack Duct, RD3.25X14X60
$30.20 each
In Stock
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In Stock
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Product Image of 5" Roof Flashing w/ Tapered Stack, RFTS5
5" Roof Flashing w/ Tapered Stack, RFTS5
SKU: RFTS5
GAF Master Flow
SKU: RFTS5
$22.26 each
In Stock
Get 7 by Fri, Nov 13
In Stock
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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.