Duct Systems · Expanded master guide
Spiral & Round Duct
Ten expanded field guides for Spiral & Round Duct: preparation, layout, support, connection sequence, inspection, common mistakes, and stop conditions.
Every guide teaches the full task
1Before you start
2Lay it out
3Set and support it
4Make the connection
5Check the install
6Common mistakes
7Stop and ask
Useful field information was rewritten into TinnerFlow’s structure. No color tiers or scoring system were imported.
Straight Runs & AssemblyExpanded guide
Straight spiral duct run
Horizontal exposed or concealed run
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Large-diameter spiral trunk
Large round main
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Small-diameter spiral branch
Small branch run
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Spiral with gasketed fittings
Leakage-sensitive system
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Spiral duct with draw-band coupling
Field-joined straight sections
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Spiral 90-degree elbow
Change of direction
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Spiral segmented elbow
Large or custom-radius turn
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Spiral tee fitting
Main with branch
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Spiral concentric reducer
Centered size change
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Spiral eccentric reducer
Offset size change
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