Product details:

Designed for appliances tested and listed for use with wood stoves, fireplaces, furnaces, boilers, stoves, ranges, water heaters, or other appliances fueled by wood, oil, coal, or gas. 6, 9, and 12 chimney pipe has 1 insulation blanket; 24 and 36 have 1/2 insulation. To calculate the installed length of DuraPlus chimney pipe, subtract 1 1/2 from each length of chimney pipe.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. It is designed to boost efficiency by staying cool on the outside and providing a hot draft on the inside.