DuraBlack is an excellent choice for an economical, drip free, single-wall stovepipe. Built to DuraVent’s high standards, DuraBlack is constructed with die-formed end fittings. Adjustable lengths eliminate the need for cutting and crimping. Available in 24 gauge lock-seam, 22 guage stainless steel and heavy duty 22 guage welded seam. DuraBlack Damper Section - install at, or close to, the stove outlet in-line. 5” pipe section with the damper pre-installed.