Fiber Patch Panel, Fixed, 4U, 12 Adapter Panel CapacityAdapter panels and splice trays NOT included This fiber patch panel is only compatible with our FB24 adapter panel inserts. To find out more, give us a call or email us. Description Fiber Patch Panel, Fixed, 4RU, 12 Adapter Panel Capacity, Integrated Fiber Guides, Aluminum, Black This rack mount fiber patch panel is 4 Rack Unit (4RU) in height and made for a 19" or 23" rack width. Accommodates 12 termination panels. This unit also features integrated