4 Inch x 6-5/8 Inch DirectVent Pro Co-Linear Conversion Kit

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Ships 1 to 2 Weeks
  • High-quality DirectVent Pro Pipe Co-Linear
  • On the Sizing Chart, you can see the size guidelines
Frequently bought together:


Product Specifications:

  • Material: Galvanized
  • Inner Diameter: 4" x 6-5/8"
  • Red Exhaust Flex: 4" x 35'
  • Green Air Intake Flex: 3" x 4'
  • Cap Style: High Wind
  • Product: Parts and Accessories
  • Use: Ducting and Venting
  • Style: Repair & Replacement

In a standard venting setup, the Flex Kit serves as an essential component. When installing a co-linear insert into a brick structure, this kit is recommended for use. It includes two pieces of aluminum flex, with one being red for exhaust and the other green for intake. Additionally, a high-wind termination cap is provided as part of the kit. These components are crucial for ensuring a proper and efficient venting system.


  • Use when installing a direct vent co-linear insert into a masonry chimney
  • Kit includes Choice of High-Wind Termination Cap and two pieces of Aluminum flex lengths - one Red (exhaust), and one Green (air intake)
  • Provides combustion air and exhaust venting for gas appliances
  • Clearance to combustibles mandated by appliance listing
  • The components twist-lock together for a quick, secure, fastener-free installation
  • 0.020" aluminum inner
  • 0.018" steel outer
  • Offsets venting obstructions

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Warranty Information

DuraVent, Inc. (“DuraVent”) provides this limited lifetime warranty for all of its products with the exception of Ventinox® (lifetime), and PolyPro® (ten years). Subject to the limitations set forth below, DuraVent warrants that its products will be free from defects in material or manufacturing, if properly installed, maintained and used.

DuraVent products are fully warranted if installed only by a professional installer. This Warranty is transferable from the original homeowner to the buyer of the home.

This warranty does not cover normal wear and tear, smoke damage or damage caused by chimney fires, acts of God, or any product that was:

(1) purchased other than from an authorized DuraVent dealer, retailer or distributor;

(2) modified or altered;

(3) improperly serviced, inspected or cleaned; or (4) subject to negligence or any use not in accordance with the installation instructions included with the product as determined by DuraVent.

This limited lifetime warranty applies only to parts manufactured by DuraVent.

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