Multi-System · Dampers & Life Safety
Backdraft damper
Gravity damper — Exhaust/intake
ConnectionFlanged/slip connection
SupportIndependent support
How to install it
- 1
Install in correct airflow orientation and plane
- 2
keep frame square
- 3
support duct so frame is not twisted
- 4
verify blades move freely
- 5
provide access.
Quality check
- Blades swing freely
- no rub
- orientation correct
Stop and verify
Stop if installed at angle outside manufacturer limit