The GAS EC fan balancer gives you complete control over your grow room environment. 
You can control maximum fan speeds of both intake and exhaust fans with the balancer. Precision control of the negative pressure within your room is simple with the balancer. Always set the outtake fan higher than the intake fan to stop positive pressure ever occurring in your grow room environment.
Designed in Germany to work with our EC fan controller.

ALL CABLES FOR EC BALANCER AND CONTROLLER ARE AVAILABLE ON THE SITE