Calculation support, not a guaranteed safety decision.

Installing dampers in duct penetrations combines overhead work, spring-loaded mechanisms and drilling and cutting at the slab or wall line.

High-energy check

Dampers and tools handled overhead can exceed injury thresholds. A released damper spring snaps closed with enough force to break fingers.

Trigger checks

Direct controls to verify

Ticks stay on this screen only. Nothing is saved or sent.

For your SPA or pre-start

State the fixing height and access, how the damper spring is restrained during fitting and how hands are kept out of the blade path.