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Whether you're looking for chimney pipe, stove pipe, pellet vent pipe, chimney liner, type-b vent pipe, gas vent chimney pipe or dryer vent pipe we've got what you need including double wall and triple wall. Use our Automated Expert Chimney Builder to get a instant quote and save time on gathering the components! You can also visit our Chimney Help Pages below to learn more about chimney venting systems.
Note: All Stove & Chimney Pipe is chosen and classified by the inside diameter. If your flue has a 6" Inside Diameter you will choose from the 6" Stove and Chimney Pipe categories.
Please Note: Chimney components from different manufacturers and brands cannot be mixed and may not fit together or could cause serious problems. Choose a manufacturer or brand based on your needs.
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Additional Chimney Information
Buy Class A Chimney Flue Pipe -Class A Chimney Flue Pipes is the best insulated stove and fireplace pipe on the market
Class A chimney pipe is one of the most preferred venting options for a number of heating appliances. The durable construction and additional walls of insulation allow for the minimum clearance to combustibles requirements of any venting option.
Class A Chimney Pipe is usually made of stainless steel or other durable metal materials and offers reduced clearances to combustibles
Class A Chimney Pipe is a type of chimney system that is usually constructed of a stainless steel or durable metal walls. The Class A chimney pipe is designed to handle the high temperatures and byproducts produced by specific heating appliances, such as wood-burning stoves, fireplaces, and some gas and/or oil fueled appliances. These pipes are specifically constructed from high quality materials to ensure a safe and efficient venting of the combustion gases and smoke to outside the home or building.
Class A Pipe can be Double wall or Triple Wall insulated pipes perfect for wood burning stoves, wood and gas fireplaces and more
The main difference between double-wall and triple-wall Class A chimney pipes lies in the number of layers they have and their corresponding insulating properties. Both double wall and triple wall chimney pipes are designed for high-temperature venting of certain heating appliances and are classified as Class A chimney systems, but they offer different levels of insulation and safety.
Double wall and triple wall insulated pipe are listed as Class A vent pipe and must meet either UL standard 103 or 103HT. UL standard 103 requires that the chimney pipe is capable of safely operating with an internal temperature of 1,000 degrees Fahrenheit and withstanding a maximum temperature of 1,700 degrees Fahrenheit. UL 103HT stands for High Temperature and the comparable standards that must be met for the high temperature chimney pipe are 1700 degrees Fahrenheit and 2100 degrees Fahrenheit.
In most cases double wall Class A Chimney pipes are used be professional installers where as the triple wall Class A chimney pipe systems are used by the do it yourself homeowners. The triple wall Class A Pipe has a 2 inch wider outside diameter which means that you will need larger holes cut through your walls and/or ceiling when installing.
It is always required to consult the appliance installation manual as well as your local and state building codes to determine which venting system is required for your specific location and project.
Northline Express features a few different brands from various manufacturers of Class A Pipe to give you the widest selection possible
Northline Express offers the following brands of Class A Chimney Pipe:
Superior Fireplaces Chimney Pipe
One important thing to note is that your entire venting run is required to be from the same manufacturer. It is never acceptable to mix and match components from different brands. Each brand offers a slightly different connection type between their components and when trying to use different brands, the components will not connect properly and will lead to a potentially dangerous result. The poor connection could lead to escaping smoke and/or a chimney fire. Using even one component from a different brand will void all manufacturer warranties from your venting and appliance manufacturers.
Class A Chimney Flue Pipe comes in a variety of sizes including 6 inch, 7 inch, 8 inch and more
All Chimney Pipe is categorized based on the diameter of the inside opening of the pipe. So a 6 inch Chimney pipe will have an inside diameter of 6 inches, where as the outside dimensions will be larger. When choosing venting and chimney components you will want to choose 6 inch elbows, caps, pipe sections, etc. or the size of your corresponding pipe. So measure the inner pipe and you will be able to determine the size components that you need.
The installation manual for your heating appliance will list the size and type of venting required for adequate ventilation. It will also list when single wall or insulated chimney pipe is allowed to be used in the venting run.
The first step when planning an installation is to use Northline Express' handy Chimney Wizard
The Chimney Wizard will take you step by step through your project and will help you select all of the components that you will need for your installation. This Wizard will help you select the Triple Wall pipe kit that is customized to your specific project.
FAQ - Class A Chimney Flu Pipes
What is a Class A Chimney flue pipe?
Class A Chimney pipe is a venting system that is used to carry smoke and other combustion by products from the heating appliance up and out the roof of the building. Class A refers to the designation that it offers the best protection and thus the minimum clearance to combustion of any venting components. Class A Chimney pipe is required for installation on certain heating appliances and for certain specific homes and appliances. It is recommended to follow all installation manual requirements as well as any state or local building codes.
What is the clearance to combustibles for Class A vent pipe?
In most applications the Triple Wall and Double Wall Class A pipe has a 2 inch minimum clearance to combustible materials. Making it ideal to go through walls, and ceilings. There may be some difference in the clearance based on your specific installation. It is required to look at the installation manual to make sure you are using all of the proper components for your installation and that you follow all state and local guidelines for installation.
How hot does Class A chimney pipe get?
Double wall and triple wall insulated pipe are listed as Class A vent pipe and must meet either UL standard 103 or 103HT. UL standard 103 requires that the chimney pipe is capable of safely operating with an internal temperature of 1,000 degrees Fahrenheit and withstanding a maximum temperature of 1,700 degrees Fahrenheit. UL 103HT stands for High Temperature and the comparable standards that must be met for the high temperature chimney pipe are 1700 degrees Fahrenheit and 2100 degrees Fahrenheit.
What is Class A chimney specs?
Class A Chimney Pipe comes in a variety of sizes and components and is manufactured by several different brands. So the specs will vary depending on what components you are looking for. You can check out our full line of Class A Chimney Products
How to install Class A chimney pipe?
Installing a Class A chimney pipe requires careful planning, adherence to manufacturer instructions, and compliance with local building codes and regulations. The installation of a Class A chimney pipe is a critical safety aspect of a heating appliance, and it is best to consult with a professional chimney installer or a local building inspector for specific guidelines and requirements in your area. You can also refer to the appliance manual and they will list all of the specifications on where to install and how to run the chimney system. Northline express also offers our handy Chimney Wizard to help with figuring out the components that you will need. Then once you have the project planned out and the products ordered you will need to measure and cut your pipe and install all of the components. Then you will be required to get a final inspection to ensure that you have a safe fully functional chimney system.
Where can I go to learn more about Chimney Pipe?
You can check out our Resource Center for helpful articles. Also remember to check out The Chimney Wizard.