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Adjustable Elbow (2)
Air Vent (4)
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Cap (6)
Collar (49)
Damper (6)
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$5 to $10 (42)
$10 to $15 (42)
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$35 to $40 (6)
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GAF Master Flow

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Product Image of 3.25" x 10" x 60" Rectangular Duct, RD3.25X10X60
$27.15 each
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Product Image of 3" Adjustable Storm Collar, SMC3
$12.99 each
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Get 1 by Tomorrow, Nov 11
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Product Image of 6" Master Flow Oval to Round 90-Degree Boot, OTR90B6
$14.95 each
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Product Image of 14" Starting Collar w/ Damper, DSCFD14
$43.99 each
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Product Image of 16" Master Flow Starting Collar w/ Damper, LSCD16
$46.53 each
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Product Image of 3.25" x 14" x 36" Rectangular Duct, RD3.25X14X36
$19.13 each
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Product Image of 24" Snap-On Rail, 6SOR24
$10.99 each
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Product Image of 24" x 36" Galvanized Steel Flat Sheet, GFS24X361P
$19.98 each
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Product Image of 4" Vent Cap (Pack of 6), VC4-GAF
$16.62 each
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Product Image of 10" x 3-1/4" to 6" Straight Stack Boot, 90SB10X3.25X6
$14.99 each
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Product Image of Master Flow Replacement Humidistat Control for Power Attic Vents
$46.95 each
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Product Image of 5" Fresh Air Intake Vent, FAV5
$32.33 each
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Product Image of Master Flow Gable Mount Power Attic Vent Fan (1600 CFM), EGV6
$119.00 each
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Product Image of 6" Master Flow Starting Collar w/ Damper, LSCD6
$21.81 each
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Product Image of Square Top Roof Louver Vent (Black), RT65BL
$15.70 each
In Stock
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Product Image of 6" Vent Cap (Pack of 7), VC6
$17.99 each
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Product Image of 2-1/2" x 12" x 2' Half Section Rectangular Stack Duct, RD2.25X12X24
$8.98 each
In Stock
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Product Image of 4" Galvanized Steel Ceiling Collar, CC4
$6.35 each
In Stock
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Product Image of 8" Master Flow Starting Collar w/ Damper, LSCD8
$27.01 each
In Stock
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Product Image of Aluminum Slant Back Roof Louver Vent (White), SSB960AW
$19.99 each
In Stock
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Product Image of Aluminum Square Top Roof Louver Vent (Black), RV50ABL
$21.43 each
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Product Image of 4" Roof Flashing w/ Tapered Stack, RFTS4
$16.99 each
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Product Image of Square Top Roof Louver Vent (Gray), RT65G
$15.70 each
In Stock
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Product Image of 6" Master Flow Oval to Round Straight Boot, OTRB6
$18.77 each
In Stock
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Product Image of Square Top Roof Louver Vent (Brown), RT65BR
$15.70 each
In Stock
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Product Image of Master Flow EZ Cool Plug In Gable Mount Power Attic Vent Fan - Black (1375 CFM), EZCG1BL
$133.00 each
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Product Image of Master Flow Green Machine Solar-Powered Roof Vent - Brown (1000 CFM), ERV4BR
$148.00 each
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Product Image of 10" Master Flow Starting Collar w/ Damper, LSCD10
$35.32 each
In Stock
Get 6 by Fri, Nov 13
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Product Image of 16" x 8" Rectangular Duct Cap, RDC16X8
$13.98 each
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Product Image of Master Flow Roof Mount Power Attic Vent w/ Combo H-Stat/T-Stat - Black (1000 CFM), ERV4BLHT
$168.00 each
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Product Image of 6" Oval Vertical Elbow (90-Degree), OV90E6
$12.99 each
In Stock
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Product Image of 6" Oval Horizontal Elbow (90-Degree), OF90E6
$22.69 each
In Stock
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Product Image of 16" x 8" x 4' Half Section Rectangular Stack Duct, RD16X8X48
$32.98 each
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Product Image of 24" x 8" x 4' Half Section Rectangular Stack Duct, RD24X8X48
$32.87 each
In Stock
Get 4 by Tomorrow, Nov 11
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Product Image of Master Flow Roof Mount Power Attic Vent w/ Combo H-Stat/T-Stat (1000 CFM), ERV4HT
$168.00 each
Out of Stock
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Product Image of Master Flow EZ Cool Plug In Gable Mount Power Attic Vent Fan - Black (1600 CFM), EZCG2BL
$158.00 each
Out of Stock
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Product Image of Master Flow EZ Cool Plug-In Roof Mount Power Attic Vent - Black (1050 CFM)
$216.34 each
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Product Image of Master Flow EZ Cool Plug-In Roof Mount Power Attic Vent - Weathered Wood (1050 CFM)
$216.34 each
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Product Image of Master Flow Roof Mount Power Attic Vent w/ T-Stat - Weathered Wood (1000 CFM), ERV4WW
$148.00 each
Out of Stock
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Product Image of Master Flow Green Machine Hybrid Solar/House Power Roof Vent (525/750 CFM)
$413.55 each
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Product Image of Master Flow Roof Mount Power Attic Vent w/ T-Stat - Weathered Wood (1500 CFM), ERV6SMWW
$188.00 each
In Stock
Get 1 by Tue, Nov 17
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Product Image of 6" Galvanized Steel Ceiling Collar, CC6-GAF
$8.98 each
Out of Stock
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Product Image of 5" Master Flow Starting Collar w/ Damper, LSCD5
$26.00 each
Out of Stock
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Product Image of 14" Master Flow Starting Collar w/ Damper, LSCD14
$44.00 each
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Product Image of Aluminum Square Top Roof Louver Vent (Mill), RV50A
$18.97 each
Out of Stock
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Product Image of Aluminum Square Top Roof Louver Vent (Brown), RV50ABR
$18.97 each
Out of Stock
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Product Image of Square Top Roof Louver Vent (Weathered Wood), RT65WW
$14.99 each
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Product Image of 4" Pivot Pipe Boot Flashing - 26 Gauge (Gray), PPBG4GR
4" Pivot Pipe Boot Flashing - 26 Gauge (Gray), PPBG4GR
SKU: PPBG4GR
GAF Master Flow
SKU: PPBG4GR
$69.95 each
Out of 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.