Use elbows to offset obstructions such as rafters, ridgepoles, or joists. When installing 10"-16" DuraChimney II you may install a pair of elbows if needed (sold as individuals). Offsets greater than 30º; are not allowed. Elbows are not adjustable.
DuraChimney is a double-wall, air-cooled chimney system for use with masonry fireplaces which burn wood, oil, coal or gas. DuraChimney is an exceptional factory-built alternative to pre-fabricated masonry chimneys that provides a hot draft on the inside and proves a fire-safe design that protects both the chimney and the building.