DS2408 Pipe /Duct /Wall Sound Masker for SCIF /Secure RoomsThe Dynasound DS2408 pipe, duct, and wall sound masker is used to protect pipes, ducts, and walls against human and electronic eavesdropping by filling them with full bandwidth sound masking. The unit may be attached to the exterior of any pipe or duct, whether square or round. It may also be attached to the vertical surface of any partition wall. The DS2408 is critical to the securing of pipes and ducts when DIAM and DCID requirements for SCIF need