DuraVent DirectVent Pro – Horizontal Vent Kit for DV Insert

$504.62

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4x6 3"&3" Flex Hz Kit - 46DVA-HCL33 (+$0)
4x6 3"&4" Flex Hz Kit - 46DVA-HCL34 (+$0)
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DuraVent DirectVent Pro Horizontal Vent Kit for DV Insert: vent through the chimney’s back wall instead of its top

The DuraVent DirectVent Pro Horizontal Vent Kit for DV Insert is a venting kit for a gas insert in a masonry fireplace. It takes the vent out through the chimney’s back wall rather than up to the roof. 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. This kit uses two separate aluminum flex liners instead, one for exhaust and one for incoming air. It includes two 10 foot liners, a wall cap, and hardware to attach the liners.

Choose two 3 inch liners or one 3 inch and one 4 inch liner to match your insert’s connections. The insert maker must approve horizontal venting. Each liner stretches to fit, but never beyond 10 feet. The horizontal route must stay level or rise toward the cap, never slope down. The unused chimney top must be watertight. Going up the chimney instead? See the DuraVent DirectVent Pro Co-Linear Kit with Flex for chimney venting. The DuraVent DirectVent Pro Horizontal Vent Kit for DV Insert ships free from My Cozy Outdoors with No Sales Tax (except WY) and the full manufacturer warranty.

Details

SKU: 46DVA-HCL33 | 46DVA-HCL34

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 Horizontal Vent Kit for DV Inserts?

A kit for venting an approved direct vent insert horizontally out through the back of a suitable masonry chimney rather than up the flue. It includes the co-linear termination, two 10-foot aluminum flex lengths and the hardware to attach the flex. Choose 3 and 3 inch or 3 and 4 inch flex on the selector to match the insert’s exhaust and intake collars.

When would I vent an insert out the back of the chimney?

When the chimney above is unusable or too tall to line economically and the insert manufacturer permits a horizontal termination; DuraVent’s supplement for this kit applies to approved appliances only. The termination sits on the rear face of the chimney at the height the insert manual allows, with the flex making the turn inside.

How far can the flex be stretched?

Each flex length can be stretched to a maximum of 10 feet; DuraVent warns not to stretch it further. The flex runs from the insert collars, up and out through the opening in the chimney back, to the termination, and is secured with the clamps and hardware supplied. Keep it free of sags and sharp kinks.

Does the kit need sealing?

Yes. DuraVent’s instructions have the termination sealed to the masonry with silicone sealant to keep water out, and the flex attachments made with the supplied hardware. The top of the old flue should be closed off as the supplement describes so the chimney is not left open above the insert.

Is it approved for my appliance?

Only for inserts whose manual lists DuraVent’s horizontal co-linear termination; the system is listed with each appliance and the manual sets the clearances, minimum height above grade and termination location rules. Vertical co-linear kits and caps for a normal up-the-chimney installation 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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