Power and Precision. Our hi-flow arms have a patented friction-release pawl and sprocket design that eliminates the drooping and hard-to-handle movement of standard arms; the E-Z Arm features a 360 degree rotation with smooth, low friction maneuverability, yet engaging positively when positioned. Effective Controls East offers a complete line of dust and fume extractors from Airflow Systems to provide effective source capture for a broad range of industrial processes which generate dust, fumes, mist, or smoke. Each fume / dust extractor can be installed either to exhaust pollutants to the atmosphere, in conjunction with a central air filtration system or as part of a portable air filtration unit.