DuraVent DuraPlus 6" Diameter Through-The-Wall Kit

Estimated Arrival: Between and . (To All Contiguous States)

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

Text or call 888-992-1556, start live chat, or email with any questions. Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.


DuraPlus is designed to stay cool on the outside, to provide a hot draft on the inside, to boost stove efficiency, and provide a fire-safe design that protects both the chimney and the building. This triple-wall chimney features two insulating layers (refractory blanket, plus air space). The refractory insulation is held securely in position, eliminating hot spots common with loose-fill type insulations. In the event of a creosote fire, the compressible blanket insulation permits the chimney liner to expand outwardly in a radial direction

Designed for normal, continuous operation at 1000° F flue gas temperatures, DuraPlus is subjected to rigorous and stringent HT requirements of the UL standard, including one hour at 1400° F, plus three ten-minute chimney fire tests at 2100° F.


  • Use for through-the-wall installations.
  • Only available in 6” diameter.


DVL/DuraBlack Chimney Adapter
Use to connect from double-wall DVL and/or single-wall DuraBlack to DuraTech, DuraPlus, and DuraLiner for a through-the-wall or ceiling support installation. Required for proper connection.
DuraBlack Snap-Lock Adapter w/ Trim
Connects into the ceiling support box or finishing collar and extends down to fit into the stovepipe for a drip-free connection to a DuraTech, DuraPlus, or DuraLiner Chimney system.
DuraPlus 9" Chimney Pipe
Designed for appliances tested and listed for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas.
DuraPlus Wall Thimble
Adjusts from a minimum of 4 1⁄4” to a maximum of 7 1⁄4” wall thickness, and fits between standard wall studs. To accommodate thicker walls, the telescoping pieces can be extended up to 16” with a field-fabricated extension installed.
DuraPlus Tee with Cap
Use for through-the-wall chimney installations. The tee clean-out cap is removable for easy chimney cleaning or inspection. Wall Straps, a Wall Thimble, and a Tee Support must be installed with the Tee as directed.
DuraPlus Wall Strap (2x)
Use in interior or exterior installations to support and stabilize the chimney while assuring a 2" clearance. Wall straps are required every 4' on the exterior of the building only.
DuraPlus Tee Support Bracket
Use to support the Tee; suspended from a wall. Supports up to 35' of DuraPlus Chimney. Starter Section built-in.
DuraPlus Chimney Cap
Use to weatherproof the penetration of chimney pipe through the roof. Storm Collar required. Select roof flashing based on the pitch of the roof.


Model 6DP-KTTW
Diameter 6"
Clearances 2" clearance to combustible.
Listings UL Listed to UL 103HT (MH7399).
Warranty Limited-lifetime warranty



Warning: This product can expose you to Chromium, which is known in the state of California to cause cancer, congenital disabilities, or other reproductive harm. For more information, see CA Prop 65 Warning