Special applications and installation environments make it necessary to omit an individual pair shielding or a total shield now and again. The responsibility for compliance with the EMC must be met by trimming out the symmetry of every line, by laying in shielded cable laying systems or by other measures. U/UTP cables are especially thin in the outer dimensions and can therefore be accommodated in very narrow cable duct systems. The demand for low cable weights also make it advisable to use U/UTP cables. UMJ 300 U/UTP 4x2xAWG23/1 PVC Cat.6 blue 305 m