The iO HVAC Controls RAT Series Retrofit Air Terminal converts constant-volume supply ducts into VAV zones without replacing existing ductwork — each terminal includes an integrated motorized damper and spring-return actuator sized to the duct diameter.

Key Features & Benefits

• No duct replacement — adds VAV zoning to existing constant-volume ductwork.
• Integrated motorized damper — precise, automatic zone airflow control.
• Spring-return actuator — fails safe and sized to the duct diameter.

Ideal For

Commercial retrofits that want to add VAV zoning to existing constant-volume duct systems without major rework.