TinnerFlow™2nd YearRound Duct Supports / Lateral DriftYELLOW · Check First
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.
Do not expect loose loop hangers to control side-to-side drift by themselves.
Lateral drift can fatigue rods, rub other trades, misalign joints, and create noise.
Final direction still comes from approved drawings, specs, manufacturer instructions, employer policy, foreman/detailer direction, structural/seismic details, and AHJ/code requirements.