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8301.5A - MTLS: Insulated Chimney Duct

Topic scaffold

Use this page to capture the durable guidance for MTLS: Insulated Chimney Duct, including inputs, sequence, QA, and pricing notes.

Code 8301.5A
Path 8000 - 8999 Interior Finishes → 8300 - Selections: Interior Fireplace → 8301A - SEL: INT Fireplace

Add the purpose and intent of this topic.

List tools, materials, assumptions, vendor notes, and coordination requirements.

Capture the preferred order of work.

Record the must-hit checks, tolerances, inspections, and sign-off steps.

Add estimating guidance, production assumptions, and procurement notes.

Note the things most likely to go sideways, plus the recovery path.