SKU: 20984342333

GAF Master Flow Roof Jack with Vent Cap, 4 in Diameter, 26-Gauge, Mill Finish

Sale price$40.77 Regular price$45.30
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

GAF Master Flow Roof Jack with Vent Cap, 4 in Diameter, 26-Gauge, Mill FinishMaster Flow Roof Jack with Vent Cap (4") Durable 26 gauge roof jack with integrated vent cap for kitchen, bath, and attic fan ventilation. Designed for roof pitches 3: 12 to 5: 12, with a mill finish for long lasting performance. Key Features: Integrated Vent Cap: Helps prevent rain and debris intrusion while exhausting air Proper Fit: 4 in diameter with 10 1 8 in height for common fan ducting Roof Pitch Compatibility: Installs on 3: 12 to 5: 12 roofs

Master Flow Roof Jack with Vent Cap (4")

Durable 26-gauge roof jack with integrated vent cap for kitchen, bath, and attic fan ventilation. Designed for roof pitches 3:12 to 5:12, with a mill finish for long-lasting performance.


Key Features:

  • Integrated Vent Cap: Helps prevent rain and debris intrusion while exhausting air
  • Proper Fit: 4 in diameter with 10-1/8 in height for common fan ducting
  • Roof Pitch Compatibility: Installs on 3:12 to 5:12 roofs
  • Durable Construction: 26-gauge metal in mill finish for strength
  • Contractor-Friendly: Single-piece jack simplifies rooftop ventilation tie-ins

Specifications Table:

Specification Details
Brand GAF
Product Name MasterFlow Roof Jack with Vent Cap
Manufacturer Number RJVC4
Product Number GAF26RJVC4
Diameter 4"
Height 10-1/8"
Thickness 26 Gauge
Color/Finish Mill Finish
Allowable Roof Pitch 3:12 to 5:12
Pieces per Carton 6
Unit of Measure Each (EA)
Weight 2.6667 lb
Style Ventilation and Drainage

Frequently Asked Questions (FAQ):

Q: What duct size does this roof jack fit?
A: It is designed for 4-inch diameter duct connections.


Q: What roof pitches can it be installed on?
A: Suitable for roofs with pitches from 3:12 to 5:12.


Q: Is the vent cap included?
A: Yes, the unit includes an integrated vent cap.


Q: What is the material thickness?
A: It is made from 26-gauge metal.


Q: How tall is the roof jack?
A: The height is 10-1/8 inches.


A Sleek, Functional Accent for Venting Done Right

This roof jack’s sculpted cap and clean mill finish bring a refined, industrial note to the roofline. The integrated vent cap is a standout, marrying performance with crisp geometry. Pair it with galvanized accessories for a cohesive, modern exterior palette. A small detail with big impact, it elevates utility to a polished, luxurious finish.


Choose the GAF Master Flow Roof Jack with Vent Cap for reliable, clean ventilation on 3:12–5:12 roofs—upgrade your airflow today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20984342333

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4.4 ★★★★★
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Simran S Bhatia
Grantham, US
★★★★★ 4
Cotton Panty - Very Comfortable
Size: Medium, Color: A-multicolor(6 Pack)
It’s really good. The best part is that it’s cotton-based, so it’s super comfortable and works really well as a period panty. The only thing I’d change is the lace it starts to get a bit frayed after washing and doesn’t shrink quite right, so it ends up looking more like a basic hipster panty. Other than that, the color variety is great.
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Reviewed in the United States on April 15, 2026
M
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Mom
Cuba, US
★★★★★ 5
5star
Very nice and soft and comfortable.. That's everything to me at 54.. cant stand polyester or elastic ect. These are perfect. I sized up cause I now want only loose everything 😆. Perfect
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Reviewed in the United States on April 15, 2026
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Susan Pierson
New York, US
★★★★★ 5
Comfortable
Size: X-Large, Color: A-multicolor(6 Pack)
Fit to size no shrinking, comfortable
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Reviewed in the United States on May 15, 2026
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Breanna
Boise, US
★★★★★ 1
Comfy but holes.
Size: Large, Color: A-multicolor(6 Pack)
Comfy and cute - holes and falling apart already. Im not sure if I just got a bad batch/pair, but the seam at the crotch connecting to the "gusset" is detaching in the black one... I really liked them too. Only worn them like 2 or 3 times, so now im worried about wearing the others.
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Reviewed in the United States on May 27, 2026
K
Verified Purchase
Keepin' it Real
Pawtucket, US
★★★★★ 3
Not full coverage
Size: Medium, Color: A-multicolor(6 Pack)
These are not full coverage and are the cheapest underwear in every way. The fabric is rough, and the seams around the edges of the leg openings are exposed. I ordered medium for my 28" waist and 38" hips. They fit... except for the buttcheek debut. I gave them to my 12 year old daughter to wear because she's not picky. Plus, they were cheap. She's happy. I'm still searching for full coverage undies. Update: The seller reached out regarding my review, and I'm impressed with their customer service. The cotton softened up upon washing and drying (no sand paper undies), and my daughter is very pleased with them.
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Reviewed in the United States on February 17, 2026

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