Spiral & Round Duct · Straight Runs & Assembly
Straight spiral duct run
Horizontal exposed or concealed run
ConnectionSlip-fit with screws/rivets and sealant or gasketed coupling
SupportBand hanger, cable loop, saddle or trapeze
Before you start
- Look at the ends of every piece.
- Spiral crushes in shipping and a crushed end...
- Stage the needed tools and materials before lifting the section: Band hangers, cable loops or saddles, sealant or gasketed couplings, sheet me....
Tools and materials
Band hangers, cable loops or saddles, sealant or gasketed couplings, sheet me...
Lay it out
- Snap or shoot a control line for the run. Round duct shows a wandering lin...
Set and support it
- Set and verify the approved supports before the connection is closed. Keep the joint from carrying the weight of the duct or fitting.
- Use the approved support method for this condition: Band hanger, cable loop, saddle or trapeze.
Make the connection
- 1
Snap or shoot a control line for the run. Round duct shows a wandering lin...
Check the install
- Round stays round; no flat spots at the hangers.
- Every joint fully insert...
Common mistakes
- Screws bunched on one side. The joint pulls oval and the far side gaps.
- J...
Stop and ask
Stop for crushed ends, wrong fitting diameter, unsupported heavy fittings or ...