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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)

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$1 to $5 (2)
$5 to $10 (41)
$10 to $15 (40)
$15 to $20 (45)
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$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 8" Master Flow Starting Collar
$8.40 each
In Stock
Get 23 by Tomorrow, Jun 5
In Stock
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Product Image of 4" Round Duct Cap
4" Round Duct Cap
SKU: DC4-GAF
GAF Master Flow
SKU: DC4-GAF
$8.11 each
In Stock
Get 25 by Tomorrow, Jun 5
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Product Image of 4" x 5' Round Metal Duct Pipe
$17.08 each
In Stock
Get 8 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 4" x 6" Master Flow 90-Degree Register Box
$12.60 each
In Stock
Get 18 by Tomorrow, Jun 5
In Stock
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Product Image of 6" Adjustable Elbow - 30 Gauge (90-Degree)
$8.75 each
In Stock
Get 65 by Tomorrow, Jun 5
In Stock
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Product Image of 6" to 4" Round Reducer - 26 Gauge
$14.69 each
In Stock
Get 18 by Tomorrow, Jun 5
In Stock
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Product Image of 14" Master Flow Starting Collar
$24.16 each
In Stock
Get 28 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 5' Beaded Round Metal Duct Pipe
$26.95 each
In Stock
Get 11 by Tomorrow, Jun 5
In Stock
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Product Image of 4" x 5' Master Flow Beaded Metal Duct Pipe
$15.40 each
In Stock
Get 5 by Thu, Jun 11
In Stock
Get 5 by Thu, Jun 11
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Product Image of Master Flow Replacement Humidistat/Thermostat Control for Power Attic Vents
$71.47 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 3-1/4" to 6" Stack Boot
10" x 3-1/4" to 6" Stack Boot
SKU: SB10X3.25X6
GAF Master Flow
SKU: SB10X3.25X6
$17.00 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of 4" to 3" Round Reducer - 26 Gauge
$14.40 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 6" to 6" Universal Register Box
$12.57 each
In Stock
Get 9 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 6" to 6" Register Box (90-Degree)
$13.77 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of Master Flow Replacement Power Attic Vent Motor, 1/5 HP, 300W
$88.99 each
In Stock
Get 17 by Tomorrow, Jun 5
In Stock
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Product Image of 5" Master Flow Ductboard Starting Collar Take-Off
$6.83 each
In Stock
Get 9 by Tue, Jun 9
In Stock
Get 9 by Tue, Jun 9
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Product Image of 3" x 2' Round Metal Duct Pipe - 26 Gauge
$7.74 each
Out of Stock
Get it by Fri, Jun 19 - Fri, Jun 26
Out of Stock
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Product Image of 6" Diameter Starting Collar
$8.05 each
Out of Stock
Get it by Fri, Jun 19 - Fri, Jun 26
Out of Stock
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Product Image of 12" x 10" Master Flow 30 GA Round Reducer
$17.98 each
In Stock
Get 24 by Tomorrow, Jun 5
In Stock
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Product Image of 10" x 4" x 4" Master Flow Universal Straight Register Box
$12.77 each
In Stock
Get 10 by Tue, Jun 9
In Stock
Get 10 by Tue, Jun 9
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Product Image of 12" Flexible Duct and Sheet Metal Connector Splice Collar
$25.57 each
In Stock
Get 9 by Tomorrow, Jun 5
In Stock
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Product Image of 12" x 4" to 6" Register Box (90-Degree)
$14.93 each
In Stock
Get 29 by Tomorrow, Jun 5
In Stock
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Product Image of 7" Master Flow Starting Collar
$7.36 each
In Stock
Get 10 by Tomorrow, Jun 5
In Stock
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Product Image of 10" Master Flow Starting Collar
$17.62 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of 4" Diameter Starting Collar
$3.25 each
In Stock
Get 50 by Tomorrow, Jun 5
In Stock
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Product Image of 7" x 5' Round Metal Duct Pipe
$18.29 each
In Stock
Get 11 by Tomorrow, Jun 5
In Stock
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Product Image of 8" x 2' Round Metal Duct Pipe - 26 Gauge
$18.32 each
In Stock
Get 6 by Wed, Jun 10
In Stock
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Product Image of 12" x 5' Beaded Round Metal Duct Pipe
$39.30 each
In Stock
Get 6 by Tue, Jun 9
In Stock
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Product Image of 5" Adjustable Elbow - 30 Gauge (90-Degree)
$4.90 each
In Stock
Get 22 by Tomorrow, Jun 5
In Stock
Get 22 by Tomorrow, Jun 5
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Product Image of 10" x 4" x 6" Master Flow Universal Straight Register Box
$13.22 each
In Stock
Get 14 by Tomorrow, Jun 5
In Stock
Get 14 by Tomorrow, Jun 5
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Product Image of 5" Master Flow Starting Collar
$6.30 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
Get 12 by Tomorrow, Jun 5
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Product Image of 12" Master Flow Starting Collar
$23.56 each
In Stock
Get 12 by Tomorrow, Jun 5
In Stock
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Product Image of 16" x 35" Galvanized Panning
$12.80 each
In Stock
Get 6 by Wed, Jun 10
In Stock
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Product Image of 8" x 5' Master Flow Beaded Metal Duct Pipe
$18.73 each
In Stock
Get 10 by Tomorrow, Jun 5
In Stock
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Product Image of 12" x 2-1/4" to 6" Universal Register Box
$16.70 each
In Stock
Get 13 by Tomorrow, Jun 5
In Stock
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Product Image of Master Flow Roof Mount Power Attic Vent (1250 CFM)
$153.37 each
In Stock
Get 2 by Tomorrow, Jun 5
In Stock
Get 2 by Tomorrow, Jun 5
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Product Image of 6" x 5' Master Flow Beaded Metal Duct Pipe
$17.31 each
In Stock
Get 14 by Tomorrow, Jun 5
In Stock
Get 14 by Tomorrow, Jun 5
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Product Image of 12" x 2-1/4" x 6" Master Flow End Register Box
$16.25 each
In Stock
Get 12 by Tue, Jun 9
In Stock
Get 12 by Tue, Jun 9
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Product Image of 3-1/4" x 10" x 3' Half Section Rectangular Stack Duct
$14.75 each
In Stock
Get 33 by Wed, Jun 10
In Stock
Get 33 by Wed, Jun 10
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Product Image of 4" Adjustable Elbow - 30 Gauge (90-Degree)
$6.39 each
In Stock
Get 19 by Tomorrow, Jun 5
In Stock
Get 19 by Tomorrow, Jun 5
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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 Tomorrow, Jun 5
In Stock
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Product Image of 4" Flexible Duct and Sheet Metal Connector Splice Collar
$8.20 each
In Stock
Get 24 by Tomorrow, Jun 5
In Stock
Get 24 by Tomorrow, Jun 5
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Product Image of 10" x 8" Master Flow Ductboard R6-Insulated Register Box
$26.26 each
In Stock
Get 20 by Tomorrow, Jun 5
In Stock
Get 20 by Tomorrow, Jun 5
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Product Image of 3" x 5' Round Metal Duct Pipe
$14.42 each
In Stock
Get 8 by Tue, Jun 9
In Stock
Get 8 by Tue, Jun 9
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Product Image of 10" x 6" Master Flow Ductboard R6-Insulated Register Box
$25.20 each
In Stock
Get 15 by Tomorrow, Jun 5
In Stock
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Product Image of Master Flow Roof Mount Power Attic Vent w/Combo H-Stat/T-Stat - Brown (1500 CFM)
$157.58 each
In Stock
Get 4 by Tomorrow, Jun 5
In Stock
Get 4 by Tomorrow, Jun 5
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Product Image of Master Flow Gable Mount Power Attic Vent Fan (1600 CFM)
$146.51 each
In Stock
Get 3 by Tomorrow, Jun 5
In Stock
Get 3 by Tomorrow, Jun 5
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Product Image of 5" x 5' Round Metal Duct Pipe
5" x 5' Round Metal Duct Pipe
SKU: CP5X60
GAF Master Flow
SKU: CP5X60
$15.92 each
Out of Stock
Get it by Fri, Jun 19 - Fri, Jun 26
Out of Stock
Get it by Fri, Jun 19 - Fri, Jun 26
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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.