DuraVent DuraChimney II- Attic Insulation Shield 8”-16” Diameter
Use in all installations that pass through an attic to prevent insulation and debris from accumulating near the chimney, unless the chimney is enclosed through attic. Consists of two parts – a collar and a base.
Overview of DuraChimney II
DuraChimney® II is an exceptional factory-built alternative to pre-fabricated masonry chimneys. DuraChimney® II is a unitized, lightweight design which eliminates the need for field assembly of pipe sections, allowing for faster installation.
DuraChimney® II is designed to stay cool on the outside, to provide a hot draft on the inside and to provide a fire-safe design that protects both the chimney and the building.
The double-wall, air-cooled design allows the chimney to expand both radially and lengthwise under high temperatures.
DuraChimney® II is tested and listed for continuous operation at 1000°F flue gas temperatures, one hour at 1400°F and ten-minutes at 1700°F, in accordance with the UL 103 test standard.
Details
SKU: 8DCA-IS | 10DCA-IS | 12DCA-IS | 14DCA-IS | 16DCA-IS
Applications
DuraChimney II is a double-wall, air-cooled chimney system for use with masonry fireplaces which burn wood, oil, coal, or gas.
Materials and Construction
.016″ 430 stainless steel inner wall and .021″ galvanized steel outer wall. For stainless steel outer wall, contact Customer Service.
Unitized pipe sections. No field assembly of inners and outers required.
Clearances
2″ clearance to combustibles.
Shrouds
UL Listed with Duravent shroud specifications.
Diameters
10″, 12″, 14″, and 16″
Listings
UL Listed to UL 103 and ULC S604 standards (MH7399).
Instructions
- DuraChimney® II 8″ Installation Instructions
- DuraChimney® II 8″ Installation Instructions FRENCH
- DuraChimney® II Installation Instructions
- DuraChimney® II Installation Instructions FRENCH
- DuraChimney® II Installation Instructions SPANISH
- DuraChimney® II New Chimney Cap Assembly Installation Instruction Addendum
- DuraChimney® II Shroud Instructions
- DuraTech® & DuraChimney® II European Copper Pots Instructions
Typical Installation
Refer to our Typical Installation drawings to select the appropriate component parts for your installation.
More Typical Installations
Installation Key
| 1 | Chimney Cap |
| 2 | Storm Collar |
| 3 | Chase Top Flashing |
| 4 | Roof Radiation Shield |
| 5 | Chimney Section |
| 6 | Elbow |
| 7 | Elbow Strap |
| 8 | Stabilizer |
| 9 | Firestop |
| 10 | Attic Insulation Shield |
| 11 | Anchor Plate |
| 12 | Anchor Plate with Damper |
| 13 | Supplementary Support |
| 14 | Wall Strap |
Planning Your Installation:
The following recommendations are a general guideline to assist in the layout and selection of the chimney components needed 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.
- Measure the diameter of the fireplace flue outlet. An improperly sized chimney results in poor draft and excessive creosote formation.
- Select the chimney with the same size diameter as the fireplace flue outlet. Refer to the chimney sizing chart in the back of this catalog for masonry fireplaces.
- Install the chimney in an enclosed chase.
- If possible, avoid offsets. A straight vertical installation is more efficient and less likely to develop creosote. If an offset is required to avoid rafters or other obstructions, measure the horizontal distance required and the vertical height available. Both 15° and 30° elbows are available. Elbows greater than 30° are not allowed in the United States. Two offset (four elbows) in a single installation is permitted. Refer to the offset chart in the back section of this catalog. At least one Elbow Strap is required. Elbow Straps ensure adequate support.
- Determine the minimum chimney height above the roof line. Building codes require a minimum of 3′ above the roof penetration and at least 2′ higher than any portion of a building within 10′. See figure 1. The termination cap is installed above that point.
- Chase Top Flashing is available. A pitched roof flashing can be locally made, if required. A storm collar is required for all installations using a flashing.
- Determine the total length of chimney required for the installation. To calculate the installed per length of 10″-16″ DuraChimney II pipe, subtract 1″ per joint. Minimum recommended chimney height, at sea level of straight vertical chimney, is 10′ to 15′ above the fireplace outlet. Higher elevations, or the use of elbows, will require approximately 30% to 60% more height to provide for an adequate draft.
- For a UL approved shroud, see the DuraChimney II Shrouds Installation Instructions (L181). View online at www.duravent. com, under catalogs and instructions.
- Be fire safe. Maintain at least 2″ clearance to combustibles. Follow local building codes and have your chimney inspected by a certified professional.
Product Resources
Catalogs
Bulletins
- DuraChimney® II Approved for Air-Cooled Listing Bulletin 2016
- DuraChimney® II 10”-16” Chimney Cap Bulletin 06-15-2018
- DuraChimney® II 8” Diameter Now Available Bulletin 08-03-17
- DuraChimney® II 8” diamètre maintenant disponible Bulletin 11-19-17
Sales Sheets
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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