Models D0110 and D0130 (w/CR round transition) Curtain Fire Dampers, designed for use in dynamic "fans on" systems where the HVAC system remains operational in the event of a fire, are UL approved for use where building codes require protection of HVAC ductwork penetrations in walls, partitions or floors that have a fire resistance rating of 2 hours or less. The D0100 Series features stainless steel closure springs for assured damper closure under airflow.
Product Notes:
- Material: 22 ga. galvanized steel.
- 4¼" (108) wide frame. Maximum Velocity: up to 2000 fpm @ 4" w.g. (see chart below for size mounting limitations.)
- Closure Device: FL Fusible Link.
- Closure Temperature:165 165°F (74°C).