Reference
Definition
What the word means. This is not a work instruction.
A damper controls, blocks, balances, or shuts off airflow depending on the type. Manual balancing dampers adjust air volume. Fire, smoke, and combination dampers are life-safety devices and carry strict access, installation, and inspection rules.
Always identify the damper type before touching it. Manual, control, fire, smoke, backdraft, and combination dampers are not the same animal.