DuraVent DirectVent Pro – Co-Linear Kit w/ Flex

$626.18

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SKU: 46DVA-CL33-25 Categories: , Brand:

DuraVent DirectVent Pro Co-Linear Kit with Flex: two liners and a cap for a masonry chimney

The DuraVent DirectVent Pro Co-Linear Kit with Flex is a vent kit for a gas insert in a masonry chimney. It includes a High Wind or Prairie cap and two flexible aluminum liners. Co-linear means the liners sit side by side, joining one cap at the chimney top. Red carries exhaust out. Green brings outside air down to the insert. DirectVent Pro is DuraVent’s pipe inside a pipe vent for direct vent gas fireplaces and stoves: exhaust goes out through the inner pipe and outside air comes in through the outer pipe.

Choose the cap style, then the flex option. Liner pairs come in 25 or 35 foot lengths. There is also a 4 inch exhaust version and an option combining long exhaust and short air liners. Insert connectors are sold separately. Have the chimney inspected and cleaned first. The system must be listed with your insert. For windy locations, the High Wind cap accepts a vertical wind guard. Working with a factory built chimney? See the DuraVent DirectVent Pro Direct Vent Factory Built Reline Kit. The DuraVent DirectVent Pro Co-Linear Kit with Flex ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

Details

SKU: 46DVA-CL33-25 | 46DVA-CL33 | 46DVA-CL33H | 46DVA-CL34 | 46DVA-CL33P | 46DVA-CL34P

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 laser-welded .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).

Clearances

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, Warnock Hersey, or OMNI. Check with your appliance manufacturer for approval.

Instructions

Typical Installation

Refer to our Typical Venting Installation drawings to select the appropriate component parts for your installation.

DuraVent Pro

More Typical Installations

DirectVent Pro installation

Installation Key 

1 Vertical Termination Cap
2 Storm Collar
3 Flashing
4 Cathedral Ceiling Support Box
5 Pipe
6 45° Elbow
7 Class A Chimney Conversion Kit
8 4″ Flex
9 90° Elbow
10 Horizontal Termination Cap
11 Snorkel Termination Cap
12 Colinear Kit
13 3″ Flex
14 Co-Axial to Co-Linear Connector
15 Masonry Chimney Conversion Kit
16 Elbow Strap

Planning Your Installation:

  1. For vertical gas stove installations, measure the height from the stove outlet to the ceiling to determine the length of black pipe required. Select a ceiling support/wall thimble cover or a cathedral ceiling support box.
  2. To determine the length of galvanized pipe required, measure the ceiling thickness and the vertical rise in an attic or second story. Firestops are required at each floor level beyond the first floor ceiling support/wall thimble cover or cathedral ceiling support box. If an offset is required to avoid obstructions, use a pair of 45° elbows. For proper support, use elbow straps with offsets. Use wall straps for long vertical runs. Attic Insulation Shield is required in attic.
  3. Measure the roof pitch. Select the proper flashing and storm collar. Determine the minimum height above the roof.
  4. For horizontal installations, check the appliance manufacturer’s instructions for minimum rise and maximum horizontal run. A snorkel termination may be used if height restrictions prevent adequate rise above the appliance. Select the appropriate Horizontal Termination Cap (see appliance manufacturer installation instructions). To protect vinyl siding, select vinyl siding standoff. Check appliance manufacturer’s instructions for wall thimble and firestop requirements.

Design Recommendations

  • The following design recommendations are general guideline to assist in the design and selection of venting components for your installation. Always follow Duravent Installation instructions enclosed with the cap or support box before installing your chimney system. Installation instructions can be viewed online at www.duravent.com, under Catalogs and Instructions. Important: Check the manufacturer’s rating plate and instruction manual to confirm that the Duravent direct vent system is approved for use on the brand name appliance you have selected.
  • The inner and outer pipe diameters should match the outlet size of the appliance.
  • Check the appliance manufacturer’s installation instructions to confirm which types of vent configurations are permitted (i.e. horizontal, vertical, chimney reline, etc.). Also, check for any venting restrictions such as maximum horizontal run, minimum and maximum vertical rise, maximum offset, etc.
  • Be fire safe! Maintain at least the minimum clearances (air-space) between the vent pipe and nearby combustibles, as specified in the appliance manufacturer’s installation instructions. Use proper support and bracing. Follow local building codes and have your venting system inspected.

Product Resources

Catalogs

Bulletins

Brochures

Sales Sheets

Educational Papers

FAQ

What is in the Co-Linear Kit with Flex?

Everything to vent a direct vent co-linear gas insert up a masonry chimney: your choice of a High-Wind or Prairie termination cap plus two lengths of aluminum flex, one red for exhaust and one green for combustion air. Choose the cap style first and then the flex option on the selectors; the chart in the listing gives the diameters and lengths.

Why are the two flex lengths red and green?

Color coding keeps the runs straight: red carries the insert’s exhaust up to the cap and green brings outside air down from the cap to the insert. Both run side by side inside the chimney, which is what co-linear means, and they must connect to the correct collars on the insert per its manual.

High-Wind or Prairie cap: which should I pick?

The insert manual names the cap it was listed with, so start there. The High-Wind cap is DuraVent’s standard co-linear termination and can take the Vertical Wind Guard on exposed roofs; the Prairie cap is the alternative style listed for some appliances. The options row under each cap lists the flex lengths and any add-on kit that goes with it.

How long a chimney will the flex reach?

The High-Wind option offers two 25-foot or two 35-foot lengths and the Prairie option two 35-foot lengths, with a 3 and 4 foot kit and an aluminum termination kit also listed. Measure from the insert collars to the chimney top; if a run is short, a flex coupling joins two pieces with sheet metal screws. Never let the flex sag inside the flue.

How is the flex installed in the chimney?

Following DuraVent’s chimney liner instructions, a flex puller and rope draw each liner up through the damper and flue while a second person feeds from below, leaving 2 to 3 inches above the chimney top for the top plate and connector. The insert end uses co-linear flex connectors or a co-axial to co-linear adapter as the insert manual directs.

Is this kit listed for my insert?

DirectVent Pro co-linear systems are listed in combination with the appliance, so the insert manual must name DuraVent’s cap and liner; clearances and maximum height come from it. Inspect and clean the masonry chimney first. Other termination and connector parts are in the DirectVent Pro category.

Shipping / Freight / Return Info

Same-Day / 24 hour shipping

Same-Day/24 hour shipping - If we have the product in stock, we can ship same day if ordered before 12pm Monday - Friday (CST).

Freight Claims Policy

Please follow these very important steps when it comes to Freight Items that are damaged or missing
  • Open and inspect the order while the delivery driver is present. If delivery driver does not provide sufficient time to do so, please notate the delivery receipt.
  • By signing the delivery receipt without noting any damage or missing items, you confirm that your order arrived complete and in excellent condition.
  • Record any damage or missing pieces directly on the delivery receipt.
  • Do not discard damaged item(s) or any original packaging. For severe damage, write “Refused due to damage” on the delivery receipt and contact us immediately.
  • Report any damage within two business days, including delivery details and photos showing the issue
  • Damaged item(s) must be returned within 30 days. Failure to return them will result in a charge to the original payment method.

Return Merchandise Authorization Policy

Please follow these very important steps when Returning Items. Contact our team.
  • Submit your return request within 30 days of delivery.
  • You will receive an email within 1-2 business days confirming whether your return request has been approved or denied.
  • Please also note that a 20% restocking fee may apply to approved returns
  • If approved, you will receive an itemized Return Authorization, return shipping labels (if requested), and detailed instructions within 1–2 business days
  • From the date this email is received, you will have 14 days to return the product.
  • Once our distributor receives and inspects the returned item(s), your refund will be issued within 1–2 weeks
  • Items returned outside of this process or time frame are not eligible for a refund.

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