Apprentice question
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Loop hangers support weight but do not control lateral movement well. Add approved rigid supports or bracing to lock the run centerline.
['Teardrop/loop hangers can let high-velocity round duct drift, especially near fans, dampers, or pressure changes.', 'Check where the run is moving and convert selected supports to rigid trapeze, split-ring saddle, or braced support per project detail so the rods stay plumb and the pipe stays aligned.']