Leviton Fiber optic patch cords are designed to interconnect or cross connect fiber networks within structured cabling systems. Leviton can produce any standard or custom fiber patch cord to meet your needs, and can offer quick-turn services for fast delivery. Leviton offers two series of patch cords: Premium Series and Economy Series. Premium Series Patch Cords offer higher performance, optional custom labels, and optional 100% interferometer testing. Economy Series Patch Cords are a price-competitive solution that meets or exceeds all industry standards. Multimode patch cords shall meet an optical return loss equal to or better than -25 dB per mated pair, and single-mode equal to or better than -50 dB for UPC polish, or -55 dB for APC polish. Insertion loss shall not exceed 0.4 dB per mated pair for multimode and 0.35 dB for single-mode. The patch cords shall be compliant with ANSI/TIA-568-C.3.