Circular sound attenuator used to control the passage of noise along an air path.

Supplied with flanged ends for direct attachment to axial fans or ductwork.

Bell mouth air exchange with spun head for minimum entrance and pressure loss. 

Quick Facts

 •  Size from 315 to 2000

 •  Insertion loss up to 30dB

 •  Non-standard sizes can also be supplied upon request.

 •  For performance requirement, no longer is there the need to produce lengthy acoustic calculations. The unique Kruger sound design system does this for you by means of an electronic noise calculation system. For details, please contact the Kruger technical design office.

Made of galvanized sheet cased with inner pod and outside lining manufactured for high density acoustic infill protected by perforated galvanized steel.