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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.
| Model | Size | Dimension |
| 8DP-AP14x17 | 14" x 17" | 8.0625" (A) x 12.375" (B) |
| 8DP-AP17x17 | 17" x 17" | 8.0625" (A) x 12.375" (B) |
| 8DP-AP13x21 | 13" x 21" | 8.0625" (A) x 12.375" (B) |
| 8DP-AP17x21 | 17" x 21" | 8.0625" (A) x 12.375" (B) |
| Clearances | 2" clearance to combustible. | |
| Listings | UL Listed to UL 103HT (MH7399). | |
| Warranty | Limited-lifetime warranty | |

Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
US$40
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