M & G Duravent 10DBK-12 10 Inch x 12 Inch Dura-black 24-ga Welded Black Stove...,M&G DuraVent,CPPF7418" /> DuraBlack is a single-wall interior stovepipe for connecting woodstoves to a manufactured chimney. Dimensions: 10'' dia. Female End x 101/8'' dia. Male End x 12'' Long Be sure to maintain an 18" clearance to all combustibles. DuraBlack stovepipe is constructed of 24 gauge steel.