Use to adapt on a zero-clearance fireplace when using DuraPlus directly off the unit. This sturdy DuraPlus component features a built-in starter section to hold pipe in place and stabilize the components during an installation.DuraPlus is a triple-wall, all-fuel chimney for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas.See all 6" DuraPlus Chimney Components.