DuraVent DuraPlus Features
- Three Lengths to Hit Any Height: Stocked in 12", 24" and 36" so you can build an exact chimney height without cutting. Most stoves need 12 feet minimum, which is four 36" sections, then a shorter piece to fine-tune.
- Triple-Wall Insulated Construction: Two separate insulating layers, a ceramic blanket plus a ventilated air space, keep the outer wall cool while holding flue gases hot inside. A hotter flue means stronger draft, less creosote and a stove burning closer to its rated efficiency.
- Rated to 2100°F for Chimney Fires: UL Listed to UL 103 HT under file MH7399. Built for continuous operation at 1000°F, then tested a full hour at 1400°F and through three separate ten-minute chimney fire tests at 2100°F.
- Only 2" Clearance to Combustibles: Passes through framing, ceiling and roof with just two inches of air space, so it fits standard 16" on-center construction without reframing the opening.
- Twist-Lock Connection: Sections join with a precision twist-lock, no locking bands or fasteners. The ceramic blanket is held in position rather than loose-filled, eliminating the hot spots and settling common to poured insulation.
DuraPlus Chimney Specifications
| Available Lengths | 12", 24", 36" |
| Part Numbers | 6DP-12, 6DP-24, 6DP-36CF |
| Inner Diameter | 6" |
| Outer Diameter | 10" |
| Construction | Triple-wall, all-fuel |
| Inner Liner | .016" 430 stainless steel |
| Intermediate Liner | .018" aluminized steel |
| Outer Wall | .018" galvanized steel |
| Insulation | Ceramic blanket plus ventilated air space |
| Connection Type | Twist-lock |
| Clearance to Combustibles | 2" |
| Listing | UL 103 HT (MH7399), ULC S629 |
| Continuous Flue Temperature | 1000°F |
| Chimney Fire Rating | 2100°F |
| Approved Fuels | Wood, oil, coal, gas |
DuraPlus Pipe Installation Manual
Download the full manufacturer installation instructions before you begin. Installation must follow these instructions and your appliance manual to stay code compliant and keep the warranty valid.
DuraPlus Class A Chimney FAQ
Which lengths should I order?
Add up the total run from the ceiling support box to above the roofline, then work backwards from 36 inch sections and use a 12 or 24 to land on the exact height. Most installs need 12 feet minimum measured from the stove.
Can I cut a section to length?
No. Class A chimney is a listed assembly and cutting voids the listing. That is exactly why it comes in three lengths, so you combine rather than cut.
Does the galvanized version work above the roof?
It is listed for it, but stainless weathers better. Many installers run galvanized inside the building and switch to the stainless version above the roofline.
Will this work with my wood stove?
If your stove has a 6" flue outlet, yes. Wood stove manufacturers call for a chimney listed to UL 103 HT (2100°F), which is exactly what DuraPlus carries. Drolet, for example, specifies a 6" HT type chimney in its manuals without naming a brand.
Can I connect this to another brand of chimney?
No. Class A chimney systems use proprietary locking joints and are listed as complete systems, so DuraPlus will not join to DuraTech, Selkirk or Ventis. Everything from the ceiling support box to the cap must be DuraPlus.
What is the difference between this and black stovepipe?
They are not interchangeable. Black stovepipe is connector pipe for the exposed run from stove to ceiling only and cannot pass through a ceiling, wall or roof. DuraPlus is Class A insulated chimney, which carries the flue through the building and outside.
How close can this be to framing and insulation?
Two inches of clearance to any combustible, the entire length of the run. Where it passes through an attic you also need an attic insulation shield. Never pack insulation against the chimney even though the outer wall runs cool.