Find the access side, label, actuator, fusible link, sleeve, blade area, or inspection point.
Check that permanent access remains reachable after walls, ceiling, insulation, hangers, and other trades are installed.
Check clearance for actuator, handle, wiring/control access, service hand clearance, and future testing.
Ask foreman
In Fire/Smoke Dampers, Access Doors & Rated Assemblies, I’m looking at: What do I do when damper handle blocked by hanger or other trade? What should I verify before I cut, drill, seal, cover, move, or install?
Do not
Do not treat damper or rated-assembly work like normal duct.