Damper Mounting Position Limits
Mounting outside the listed orientation
Red / Stop And Verify3rdBatch 4
What This Helps With
Mounting outside the listed orientation
Apprentice words: damper mounting position
Trade terms: mounting orientation, listed position, vertical/horizontal
Check First
Listed orientations and any position limits
What Not To Do
Assume any orientation is fine
What can go wrong: Rotating a damper outside its listing
Better Foreman Question
Is this orientation allowed by the damper's listing?
Verify With
Reference type: NFPA 90A
Source to verify: Manufacturer listing; NFPA 90A; AHJ
Safe wording: RED ZONE. Orientation per listing only.