Complete Class A Chimney Kit for Through-the-House Installation (Multi-Story)

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Cathedral Ceiling Kit   Through-the-Attic Kit

Complete Class A Chimney Kit for Multi-Story Homes (Through the House Installation)

This kit is specifically designed for installations where the chimney runs vertically through one or more floors before exiting the roof.

Build a safe, UL103HT compliant chimney that passes through multiple floors, goes into the attic, and exits through the roof. This kit is designed for multi-level homes and includes what you need to meet clearances and code at every level.

It’s the ideal solution for installations that start on the ground floor, go through the upper floor, then continue through the attic space before exiting through the roof with a certified roof flashing and storm collar.

• ✔ All components included – no guesswork
• ✔ UL103HT certified Class A pipe – maximum safety
• ✔ Optimized for multi-level chimney runs with attic insulation shield
• ✔ Ships from our U.S. warehouse within 24 hours
• ✔ Lifetime warranty – 304 stainless steel inner wall

How This Kit Works

Standard configuration: your stove sits on the ground floor. The chimney pipe runs straight up, penetrating the ceiling into the upper floor. From there, it continues up through the attic space and exits the roof with a secure flashing system. The attic insulation shield ensures compliance with all U.S. building codes.

You can adjust ceiling heights, attic depth, and pipe length directly in the configurator to match your situation perfectly. The included support box safely anchors the chimney through floor structures, while the roof components ensure a weatherproof seal.

Need Installation Help?

Check our installation guides or contact our expert support team. We're here to help you plan your chimney from stove to sky.

MANUAL BLOGWhen to Box In

FAQ

Can this kit handle three levels?
Yes, it’s designed for two ceilings (ground to upper floor, then upper floor to attic). After the attic, it exits the roof.

Is this compatible with UL103HT chimney pipe?
Yes. All included pipes and parts are Class A UL103HT certified, suitable for all U.S. building codes.

How do I adjust for my ceiling heights?
Use the configurator on the right. It lets you enter the ceiling height and total chimney height. The system selects the right lengths for you.

Can I install this myself?
Yes, this kit is designed for DIY installation. Just follow the instructions or contact us for support.