... sliding fittings with self-locking functions prevent the drawer. 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 adapters. The ... splicing, easy to withdraw the fibers when testing and distributing. 19'' Slidable Rack-mount Fiber Optic Distribution Frame