DuraVent DirectVent Pro – Direct Vent Factory Built Reline Kit

$787.10

✓ Free Shipping
✓ No Sales Tax (except WY)
✓ 100% Price Match Guarantee

DuraVent Logo

DuraVent Logo    Authorized Dealer – Full Warranty Included

Choose Size* *

3” x 35 ft - 46DVA-CL33KFB (+$0)
4” x 35 ft - 46DVA-CL34KFB (+$0)
Product price: $787.10
Total options:
Order total:
SKU: 46DVA-CL33KFB Categories: , Brand:

DuraVent DirectVent Pro Direct Vent Factory Built Reline Kit: two liners for an existing metal chimney

The DuraVent DirectVent Pro Direct Vent Factory Built Reline Kit is a liner kit for a direct vent gas insert in an existing factory built metal chimney. It is for a metal chimney, not a brick one. You get a high wind cap, two 35 foot flexible aluminum liners, and four hose clamps. This arrangement is called co-linear: separate liners run side by side and meet at one cap. Red marks the exhaust liner, and green marks the incoming air liner. The old chimney needs at least 7 inches inside. It must be inspected and cleaned first, then serves only as a passage for the liners.

Choose a 3 inch or 4 inch exhaust liner to match your insert. The insert connectors are sold separately. 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. Approval is for the vent together with the insert, not the vent alone. Working with brick? See the DuraVent DirectVent Pro Co-Linear Kit with Flex for masonry chimneys. The DuraVent DirectVent Pro Direct Vent Factory Built Reline Kit ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

Details

SKU: 46DVA-CL33KFB | 46DVA-CL34KFB

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 the Direct Vent Factory Built Reline Kit?

A kit for installing a direct vent co-linear insert into an existing factory-built (zero-clearance) chimney. It includes a High-Wind Termination Cap, two lengths of aluminum flex for exhaust and combustion air, and four hose clamps. Select the 3 or 4 inch flex option on the page to suit the insert’s collars.

How is this different from the masonry co-linear kit?

The parts are matched to a factory-built chimney: the flex runs through the metal chimney’s inner pipe and the High-Wind cap terminates on top of it, following DuraVent’s zero-clearance section of the chimney liner instructions. The masonry kit offers cap choices and different flex lengths for a brick flue. Both are two-liner co-linear systems.

Does my old chimney have to be checked first?

Yes. The factory-built chimney must be intact and cleaned, and the insert manual must permit installation in a factory-built chimney using DuraVent’s co-linear system; DirectVent Pro is listed in combination with the appliance. The old wood-burning fireplace and chimney are being reused only as a chase for the liners.

How are the flex liners run and secured?

Draw them up with a flex puller, one at a time, without letting them sag, and join short pieces with a flex coupling if needed. The four hose clamps secure the flex to the insert connectors and the cap connector. Leave 2 to 3 inches of flex above the chimney top so the termination seats correctly.

What else might I need?

Co-linear flex connectors or a co-axial to co-linear adapter at the insert, as the insert manual specifies, and DuraVent’s Vertical Wind Guard if the roof is exposed. Those and the other DirectVent Pro co-linear parts are sold separately; clearances and maximum height come from the insert manual.

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.

Customer Reviews

Be the first to review this product

What Our Customers Say

Shop by Best Sellers

Fireplace

Get In Touch

Call or Text us for our Best Price

It's important to us to go above and beyond for our clients and make sure you make the right decision for your home.