The Professional Grade High Performance CAT6A S/STP LSZH Ethernet Cables hearing from their customers about the challenges of finding high-quality, high-grade Ethernet cables, triplett test equipment - which has been a U.S.-based designer and manufacturer of copper cable testers since 1904 - decided to launch their own line of LSZH CAT6A cables. Most traditional Ethernet cables have PVC jackets. Low Smoke Zero Halogen (LSZH/LSOH) means the type of jacketing on the Ethernet cable is made of a thermoset compound, rather than a PVC or thermopastic polyurethane. The LSZH jacket is more durable, and is also safer than other types of jacketing in that it does not release hydrogen chloride if it burns.