DuraPlus is designed to stay cool on the outside, to provide a hot draft on the inside, to boost stove efficiency, and to provide for a fire-safe design that protects both the chimney and the building. This triple-wall chimney features two insulating layers (ceramic blanket, plus air space). The ceramic blanket 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® 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.

What's Included

• (2) Elbows
• (1) Elbow Strap

Features

• Use for offsets around obstructions such as rafters, ridgepoles, or joists.
• May have two pairs of elbows, if needed.
• Offsets greater than 30° are not permitted in accordance to UL 103 standards.
• Elbows swivel 360° at base (angles are not adjustable).
• A pair of elbows is required to return an offset chimney back to vertical.
• Available in stainless steel (KSS) or galvalume (K) outer wall.

Specifications