Our Duplex Single Mode LC/LC Keystone Fiber Coupler is a great solution for consolidation of ethernet access in open or temporary offices and for extending or consolidating runs. These duplex single mode LC/LC keystone fiber couplers meet the performance requirements specified in TIA-568-C.2. Our duplex single mode LC/LC keystone fiber couplers are compatible with Weltron keystone faceplates, surface mount boxes, and blank patch panels.