The 4-core fiber termination box provides a stable, protective joint between optical cable and distribution pigtails at the end of fiber cables. It is typically used in cabling work area subsystems. pdf Terminal Box FN-12 Fiber tray capacity: – LC/SC/FC Terminal Box 1WE Fiber tray capacity: 24F Terminal Box 2-3WE Fiber tray capacity: 48F Terminal Box 4-23WE Fiber tray capacity: 192F DW-2. The fiber splicing, splitting, distribution can be done in this box, and meanwhile it provides solid protection and management. This box is used as a termination point for the feeder cable to connect with drop cable in FTTX communication network system.