Fiber Patch and Splice Panel, Slide-Out, 3U, 9 Adapter Panel CapacityAdapter panels and splice trays NOT included. This fiber patch panel is only compatible with our FB24 adapter panel inserts and FB25 3996STA24 splice tray. To find out more, give us a call or email us at. Description Fiber Patch and Splice Panel, Slide Out, 3RU, Holds 9 Adapter Panels and 5 Splice Trays, 120 Splice Capacity, Steel, Black Compatible with Splice Tray FB25 3996STA24 This rack mount fiber patch panel is a 3 Rack Unit (3RU), 9 termination