Finish, fold, trim, or protect sharp drive ends per shop practice before leaving the joint. Sharp ends cut hands, tear insulation/vapor barrier, and create punchlist issues.
Look where hands, insulation, or ceiling work will hit
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In Rectangular Duct Assembly: S-and-Drive, I’m looking at: What do I do with sharp drive ends? What should I verify before I cut, drill, seal, cover, move, or install?
