Leviton Opt-X Wall-Mount Enclosures are ideal for fiber applications requiring patching cross-connect and/or splicing of single-mode or multimode fibers while utilizing a minimum of space. The Medium Wall Mount Enclosure is a 12in high wall-mount unit that accommodates up to four Opt-X adapter plates and six splice trays or 4 MTP modules. Like other Leviton Fiber Enclosures the Medium Enclosure incorporates many innovative design features at little additional cost. Self-healing grommet material at all cable entry and exit points Stackable and adjustable fiber management rings Enclosures are sold empty. Order loaded Opt-X adapter plates separately