Model # RJVC4

Internet # 100396960

Store SKU # 237639

Store SO SKU # 755578

4 in. Roof Jack with Vent Cap

$17.64 /each

Frequently Bought Together

Product Overview

Roof Jacks are used to receive and cover venting duct pipe from kitchen and bath fans, and for attic ventilation. Our strong steel design provides maximum leak protection with a press-sealed built-in roof flashing. Vent caps provide protection from rain, snow and debris.

  • Sturdy galvanized steel construction
  • Built-in roof flashing is press-sealed for maximum leak protection
  • Tapered stack adapts to roof pitches from 3/12 to 5/12
  • Install using appropriate roofing nails
  • Made for 4:12 roof pitch, but it can be adapted for 3:12 - 5:12 pitches
  • Built-in, press-sealed roof flashing protects against rain, snow and debris
  • Maximum temperature rating of 390 degrees Fahrenheit, minimum temperature rating of -100 degrees Fahrenheit

Info & Guides

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Product Depth (in.) 
Product Diameter (in.) 
4.0 in 
Product Height (in.) 
Product Length (in.) 
13 in 
Product Width (in.) 


Duct Type 
4" Round 
Galvanized Steel 

Warranty / Certifications

Certifications and Listings 
No Certifications or Listings 

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Customer Questions & Answers

1 Question2 Answers

Customer Questions & Answers

4 in. Roof Jack with Vent Cap
4 in. Roof Jack with Vent Cap

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This question is from 4 in. Roof Jack with Vent Cap
2 answers

is the vent cap removable

This question is from 4 in. Roof Jack with Vent Cap
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February 8, 2016
is the vent cap removable?
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Answers (2)

February 12, 2016
Yes, the roof cap is removable.
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February 9, 2016
Yes, this cap is removable. Please call MasterFlow Technical Services at 800-211-9612, M-F 8A-5P ET, with any additional questions.
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Customer Reviews

Rated 5.0 out of 5 by 2 reviewers.
Rated 5.0 out of 5.0 by Quick repair of damaged, lead roof jacks This product makes for a very easy repair to lead roof jacks that have been chewed on by squirrels. Slip over the existing vent, without removing any of the existing lead, and slide the top edge under the upper / first row of shingles and the repair is done. There is no need to do additional sealing or fasteners as long as the existing lead roof jack is not leaking. The metal roof jack is tall enough to clear the top of the existing vent so there is no vent stoppage and the squirrels will not chew on the metal so this is a permanent fix. December 22, 2015
Rated 5.0 out of 5.0 by Roof jack vent cap H/D had just what I needed in stock locally at a fair price. I was impressed with the quality. Works well. January 14, 2014
  • 2016-07-24 T18:12:58.043-05:00
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