4-Inch Insulated Chimney Pipe - 24-Inch Length

This 4-inch insulated chimney pipe is a 24-inch fixed length for compatible Selkirk Model HT / Ultra-Temp chimney installations. It provides a factory-built insulated chimney section for installations that require a listed 4-inch chimney system.

Selkirk's current Ultra-Temp literature lists the 4-inch system to UL 103 Type HT in the United States. The system uses stainless steel construction with 1-inch solid-pack insulation and requires 2 inches of clearance to combustible materials when installed according to the manufacturer's instructions.

Why Choose a 24-Inch Chimney Section?

The 24-inch length is useful when a full 36-inch section is too long for the available chimney run or when you need to fine-tune the total installed height. It can be combined with other compatible 4-inch insulated chimney lengths to build the required chimney system.

Insulated chimney helps retain flue-gas heat as exhaust moves through colder portions of an installation. That can support stronger draft and more consistent chimney performance when compared with using uninsulated connector pipe where insulated chimney is required.

24-Inch 4-Inch Chimney Pipe Features

• Inside diameter: 4 inches
• Nominal length: 24 inches
• Insulation: 1-inch solid-pack insulation
• Clearance: 2 inches to combustibles when installed per Selkirk instructions
• Listing: UL 103 Type HT for the 4-inch Ultra-Temp system in the United States
• Connection: Twist-lock style chimney connection
• Manufacturer: Selkirk

Selkirk's current 4-inch product literature lists the 24-inch fixed length as product code 204024U. Installed length is reduced slightly at each joint because chimney sections overlap when connected, so account for joint engagement when planning the full chimney height.

Combine With Other 4-Inch Chimney Lengths

Build the chimney height you need by combining compatible sections from the same Selkirk system:

• 4-Inch Insulated Chimney Pipe - 36-Inch Length
• 4-Inch Insulated Chimney Pipe - 18-Inch Length
• 4-Inch Insulated Chimney Pipe - 12-Inch Length

Related 4-Inch Installation Components

Depending on your chimney route, you may also need the 4-Inch HT Pipe Adapter, 4-Inch Black Ceiling Support, 4-Inch Storm Collar, or 4-Inch Rain Cap.

Read our 4-Inch Stove Pipe Guide for help understanding where connector pipe ends and insulated chimney begins. You can also browse all 4-inch insulated chimney pipe and installation accessories.

Installation and Compatibility

Use this chimney section only in a compatible 4-inch system and only where permitted by the appliance manufacturer, Selkirk instructions, and local authority having jurisdiction. The correct chimney height, supports, firestops, flashing, and clearances depend on the appliance, structure, roof configuration, and chimney route.

For current manufacturer specifications and technical literature, see the Selkirk Ultra-Temp chimney information.

If you are unsure which lengths or accessories your installation requires, contact us before ordering so we can help you identify the correct 4-inch components.