4 Inch DirectVent Pro Co-Linear Conversion Kit

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  • Durable DirectVent Pro Co-Linear Conversion Kit w/ Flex Prairie Cap
  • On the Sizing Chart, you can see the size guidelines
Frequently bought together:


This is crucial for the installation of a direct vent co-linear insert in a chimney. The kit consists of two aluminum flex lengths, one colored red for exhaust and the other colored green for air intake. Alongside these, a rectangular termination cap is included. These components play a vital role in ensuring adequate ventilation by effectively segregating the exhaust and intake pathways within the chimney system.

Product Features:

  • 0.018" steel outer
  • 0.020" aluminum inner
  • Offsets venting obstructions
  • Clearance to combustibles mandated by appliance listing
  • Provides combustion air and exhaust venting for gas appliances
  • The components twist-lock together for a quick, secure, fastener-free installation
  • Kit includes: Choice of High-Wind Termination Cap or Prairie Termination Cap; and two pieces of Aluminum Flex lengths - one Red (exhaust), and one Green (air intake). See chart for diameters and lengths.

Product Specifications:

 Size:  4" Inner Diameter
 Outside Diameter:
 6 5/8"
 Weight:  25 lbs.
 Material:  Galvanized
 Red Exhaust Flex:   4" x 35'
 Green Air Intake Flex:  3" x 35'
 Cap Style:  Prairie
 Use:  Ducting and Venting
 Style:  Repair & Replacement
 Product Type:  Co-Linear Conversion Kit

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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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