The rectangular elbow silencer is intended for silencing noise in ductwork in applications with limited space, where straight lengths of ductwork are not available. The simple design, relatively low cost, high sound attenuation, and low pressure drop make the ERM a. Circular attenuator suitable for direct connection to 1000mm cased axial fans Construction comprises galvanised steel outer casing, end rings fitted with tapped inserts to suit the relevant fa. By minimizing unwanted sound transmission through ductwork, these devices enhance acoustic comfort in. With over 60 years of experience, Ruskin is recognized as a leading manufacturer of acoustical duct silencers and acoustical thermal modular housings, providing top quality and unparalleled performance at an economical price. Ruskin has a complete line of acoustical products as well as the. In ventilation systems, noise stems from a variety of components such as the fans or the fire dampers.
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