Fiber Dome Closure, 96 Single Fusion Splice Capacity, Includes 1 Splice TrayAdditional FB25 4000STP24 splice trays sold separately. Description Fiber Dome Closure, 96 Splice Capacity Compatible with Splice Tray FB25 4000STP24 The FB23 4379 96DE fiber optic dome splice closure is an "all parts" inclusive hermetically sealed splice enclosure designed for ease of assembly and re entry. The closure is designed with a gasketed split end plate for mid access cable applications and includes an integrated slack storage basket,