End-of-Cable Mounted Semi-Open Shuttles
For ordering or questions please contact Greenlee Communications at 1(800) 642-2155


  • Used to install very light and flexible fiber optic cables.
  • N271.004 fits 26mm – 32mm ducts.
  • N271.003 fits 32mm – 40mm ducts.
  • N271.005 fits 42mm – 50mm ducts.



About the Sonic Heads
Sonic Heads are end-of-the-cable mounted semi-open shuttles used in conjuction with Cablejet to install very light and flexible fiber optic cables. It allows a slight tension force at the lead end of the cable to help keep the cable straight in the duct while allowing a large portion of the air flow to pass by so that the drag force can still act on the entire length of the cable. As the pressure builds behind the shuttle, a spring-loaded valve opens wider to limit the tension force and allow even more of the drag force to pass by. The Sonic Head has also shown to be a useful tool when installing some cables in corrugated duct, in that it slows sown the air flow and reduces turbulence caused by the duct corrugations.

For More Information about the Sonic Heads contact your local Sherman & Reilly Representative or call Sherman & Reilly directly at 1-800-251-7780.

There are no specifications available for this product.

Please refer to the Product Sheet found on this page under Downloads.