Class a chimney pipe is either a double or triple wall construction.
Double or triple wall chimney pipe.
7 duraplus chimney pipe duraplus is a triple wall 2100 all fuel chimney system and is tested to ul 103 ht standards.
Double and triple wall insulated pipe is listed as class a vent pipe and must meet either ul standard 103 or 103ht.
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.
Shop single double and triple wall stove and chimney pipe including simpson dura vent selkirk metalbestos amerivent metal fab security chimneys and more.
Browse by double or triple wall galvanized stainless steel collars thimbles in all sizes by top brands skip to main content 855 484 3292.
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.
Double wall stove pipe is used to make the connection from the chimney or chimney kit to the appliance in the final interior run.
These pipes contain fiberglass or ceramic insulation to stay cooler on the outside and must maintain a 2 inch clearance to combustibles.
Both duratech and duraplus are tested to the same temperature 2100 degrees and clearance to combustibles on both brands is 2.
Double wall stove pipe can reduce the clearance needed to combustibles in many situations and typically has a stainless steel inner wall that will provide a much loger time of service that a typical single wall setup.
Duraplus is for use with wood stoves fireplaces furnaces boilers ranges water heaters or other appliances fueled by wood coil oil or gas.
For safety the single or double wall black stovepipe transitions to class a chimney pipe when it nears a wall or ceiling.