Single-wall pipe keeps your home smoke-free and safe as you fire up your wood-burning stove DuraBlack line features die-formed fittings and adjustable lengths, so you don't need to cut or crimp the ends Vents smoke and exhaust fumes outside from wood, oil, coal, and gas fuels, keeping your safety and convenience a top priority 0.20-inch 430 stainless steel construction with lock-seamed design offers drip-free operation for use winter after winter 12-inch length (10.75-inch installed length) with a 6-inch diameter offers a snug fit for quick and simple installation, no sealant is required; Requires 18-inch clearance to combustibles