Duravent 4" x 6-5/8" DirectVent Pro 25' Co-Linear Kit w/Flex | 46DVA-CL33-25

Duravent 4" x 6-5/8" DirectVent Pro 25' Co-Linear Kit w/Flex  | 46DVA-CL33-25

DirectVent Pro features tight inner connections for superb performance, with no gaskets or sealants required (unless specified by the appliance manufacturer). All black pipe lengths, pipe extensions, and elbows feature laser-welded outer wall seams for a sleek finish. Low-profile locks and no hems or beads allow for a beautiful product that looks elegant in any interior. 

DuraVent's direct vent is specified by nearly every major stove and fireplace manufacturer in the U.S. and Canada, with the largest choice of termination caps for direct vents available.

Applications

DirectVent Pro is a unitized, coaxial (concentric) venting system designed for use with direct vent gas or propane stoves, heaters, and fireplaces.

Materials and Construction

.020” aluminum inner wall. .018” galvanized steel outer wall. Painted outer walls made of laserwelded .018” galvalume steel. Caps also available in stainless steel and copper. Outer pipe brings combustion air to the appliance. Inner pipe exhausts flue gases to the outside. Gaskets or sealants not required (unless specified by the appliance manufacturer).

Diameters

4” x 6 5⁄8” and 5” x 8”.

Listings

DirectVent Pro, in combination with the gas appliance, has been tested and listed as a decorative gas appliance system or as a direct vent heater system by a major testing agency, such as UL, CSA, or Warnock Hersey. Check with your appliance manufacturer for approval.

DirectVent Pro Chimney Conversion Kit from Duravent

• Use when installing a direct vent co-linear insert into a masonry chimney.

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).
• 3" Exhaust / 3" Intake diameter
• 25ft Pipe length

Resources

DirectVent Pro Co-Linear Reline Kit w/Flex

What Our Experts Think

• Complete Co-Linear Venting Solution – The DuraVent 4" x 6-5/8" DirectVent Pro 25' Co-Linear Kit w/Flex (46DVA-CL33-25) provides an efficient and safe venting system for gas fireplaces and inserts.
• Flexible 25-Foot Aluminum Liners – Includes two high-quality aluminum flex liners (4" exhaust, 3" intake) for easy installation in existing chimneys or tight spaces.
• Enhanced Venting Efficiency – The co-linear design improves airflow and combustion efficiency, ensuring optimal appliance performance.
• Durable & Corrosion-Resistant Construction – Built with premium materials to withstand high temperatures and long-term exposure to combustion gases.
• Secure & Easy Connection – Designed for a hassle-free setup with DirectVent Pro components, ensuring a snug, leak-free fit.
• Ideal for Fireplace Inserts – Perfect for venting gas inserts through existing masonry chimneys, reducing heat loss and improving safety.
• UL Listed & Code Compliant – Meets industry safety standards for reliable operation and peace of mind.

Q&A

Q: What is the Duravent 4" x 6-5/8" DirectVent Pro 25' Co-Linear Kit w/Flex?
A: A co-linear venting kit designed for high-efficiency gas fireplaces and inserts, featuring flexible aluminum liners for intake and exhaust.

Q: What material is it made of?
A: Constructed with durable aluminum flex liners and high-quality components for reliable performance and longevity.

Q: Why choose this venting kit?
A: Provides a complete co-linear venting solution, ensuring safe and efficient operation of gas appliances in masonry chimneys.

Q: What does the kit include?
A: Includes a 25' flexible aluminum intake liner, a 25' exhaust liner, and necessary components for installation.

Q: Is professional installation required?
A: Professional installation is recommended to ensure proper venting, safety, and compliance with local codes.

Q: What is the warranty?
A: Warranty details vary; check with Duravent for specific coverage and terms.

Maintenance Tips

• Regular Inspection: Check for any visible damage, kinks, or obstructions in the flex liners.
• Cleaning: Use a soft brush or compressed air to remove soot and debris from the venting system.
• Secure Connections: Ensure all clamps and connections are tight to prevent leaks.
• Corrosion Check: Inspect for rust or wear, especially in high-moisture environments.
• Annual Maintenance: Have a professional inspect and clean the entire venting system to ensure proper operation and safety.