The DIBD230A is a UL555 Classified Curtain Type Dynamic Fire Damper. It features:
- An integral sleeve that ensures appropriate sleeve installation and allows delivery direct to the job site.
- 3-Hour Rating
- Vertical and horizontal closure spring operation for assured closure under air flow (fans on) in HVAC systems.
- Galvanized steel construction.
Note: Multiple sections require field joining of individual sections per basic installation instructions.