e2Flow® | 0.2” w.c. to 1”w.c. Pressure


eFlow-CAR Dual Flow Damper (e2Flow®) features built in eFlow-CAR to allow for controlled minimum airflow.

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eFlow-CAR Dual Flow Dampers (e2Flow®) are self-re gulating motorized dampers designed to introduce flexibility and dynamic control in central ventilation systems. The module opens and closes via a blade controlled by Belimo actuator, eliminating the need for expensive electronic control systems. e2Flow is available in 6”, 8”, 10”, 12” diamater. e2Flow features built in eFlow-CAR to allow for minimum controlled airflow. It combines low-flow and on-demand high-flow ventilation while using the same central fan system. In the “off cycle” position, the factory-calibrated eFlow-CAR allows for steady, low-flow ventilation (min setting). In the “on cycle”, the maximum flow rate is allowed. eFlow-CARs are factory set Constant Airflow Regulators that are designed to save a significant amount of energy by precisely controlling airflow into or out of a space. This is done regardless of static pressure. The use of eFlow CARs helps ensure High Indoor Air Quality (IAQ). eFlow-CARs are composed of UL94V-0 ABS plastic and are UL 2043 safety classified (labeled for flame and smoke generation). They feature a self-regulating aero-wing and spring piston design to maintain factory preset air flows.

● Diameters offered: 6”, 8”, 10”, 12”
● Operating Pressure Range: 0.2” w.c. to 2.4” w.c.
● Two position pressure-independent damper with integrated eFlow-CAR
● Minimum airflow settings:10-295 CFM
● Field adjustable CFM setpoint
● Suitable for both supply and exhaust applications
● Maximum operating temperature: 180° F
● Operated by Belimo actuator: 24V or 120V
● Galvanized steel casing
● Closed position (off cycle/default) airflow is delivered via built-in CAR (min flow)
● Open position (on cycle) the blade is fully open (max flow)
● eFlow-CARs are composed of UL94v-0 ABS plastic
● eFlow-CARs are UL2043 classified
● Easy In-Line installation (no mounting hardware or additional support required)
● Maintenance free and corrosion-proof under normal conditions
● Patent pending
● Made in USA
● Warranty guaranteed for (5) years


Guaranteed for 5 years, from the date of shipment, against all defects in material, provided material has been installed and used under normal conditions.

Additional information

Weight 6 lbs
Dimensions 12 × 12 × 12 in
Pressure Range

0.2” w.c. to 1”w.c.

Diameter & CFM Range

e2Flow 10” Airflow Range 10-30 CFM, e2Flow 10” Airflow Range 30-60 CFM, e2Flow 10” Airflow Range 60-105 CFM, e2Flow 12” Airflow Range 10-30 CFM, e2Flow 12” Airflow Range 105-210 CFM, e2Flow 12” Airflow Range 30-60 CFM, e2Flow 12” Airflow Range 60-105 CFM, e2Flow 6” Airflow Range 10-30 CFM, e2Flow 8” Airflow Range 10-30 CFM, e2Flow 8” Airflow Range 30-60 CFM

Control Type

24 Volts, 120 Volts