Slidable Rack-mount Fiber Optic Distribution Frame has aluminum sliding fittings with self-locking functions prevent the drawer from falling when moved; 19-inch rack mount for ST, SC, LC, MTRJ, FC,etc. adapters. And Fiber Quantity can be 12 core, 24 core, 48 core, 96 core etc.The drawer is the holding board for splicing, easy to withdraw the fibers when testing and distributing.