OPT-X® 500i SDX 1RU flush mount fiber distribution and splice enclosure, empty, accepts up to (3) SDX adapter plates or SDX MTP cassettes to patch up to 72 LC fibers per RU. OPT-X® 500i SDX rack mount enclosures and panels allow for inter-connect or cross-connect between backbone cable and active equipment, for up to 72 LC fibers per RU, in a frame or cabinet setting. The features and design allow for easy field termination of connectors, splicing or installation of pre-terminated plug-n-play solutions. These economical enclosures and panels are ideal for small enterprise applications.