For safety the single or double wall black stovepipe transitions to class a chimney pipe when it nears a wall or ceiling.
Double or triple wall chimney pipe.
Duraplus features two layers of insulation and is available in sizes 6 to 8.
Double and triple wall insulated pipe is listed as class a vent pipe and must meet either ul standard 103 or 103ht.
Duraplus is for use with wood stoves fireplaces furnaces boilers ranges water heaters or other appliances fueled by wood coil oil or gas.
These pipes contain fiberglass or ceramic insulation to stay cooler on the outside and must maintain a 2 inch clearance to combustibles.
Ul standard 103 requires pipe capable of safety operating with an internal temperature of 1 000 degrees fahrenheit and withstanding a maximum temperature of 1 700 degrees fahrenheit.
Duraplus is a triple wall chimney system with a layer of insulation between the innermost wall and the middle wall whereas duratech is a double wall chimney system with a layer if insulation between the two metal walls.
Browse by double or triple wall galvanized stainless steel collars thimbles in all sizes by top brands skip to main content 855 484 3292.
Both duratech and duraplus are tested to the same temperature 2100 degrees and clearance to combustibles on both brands is 2.
7 duraplus chimney pipe duraplus is a triple wall 2100 all fuel chimney system and is tested to ul 103 ht standards.
Less creosote accumulation is another positive feature due to the heat retention of double wall stovepipe.
Class a chimney pipe is either a double or triple wall construction.
Solid packed chimney these pipes have smaller inner diameters usually ranging from 5 inches to 8 inches that have some insulation either double wall like simpson duravent duratech pipe or triple wall like simpson duravent duraplus pipe.