• Modulating rotary damper automatically responds to changes in duct pressure to maintain set flow.
• Balance supply or exhaust/return duct in high-rise building.
• Sized to fit inside standard rigid round ducting, take-offs, tees, and more.
• Dual-side airflow adjustment dial and CFM indicator allows you to set or change the airflow quickly, in supply or exhaust applications, without removing the CAR3 from the duct.
• Resin is enhanced with antimicrobial, anti-static, and flame retardant additives for increased safety and durability.

The target operating pressure ranges:

• 0.12 to 1.2 in. w.g. (30 to 300 Pa) for low pressure models (CAR3-L)
• 0.4 to 2.8 in. w.g. (100 to 650 Pa) for high pressure models (CAR3-H)

UL 2043 safety classified and labeled for flame and smoke generation (File No. R39897).