Conforms 19” or ETSI Professional and advanced cable management with 45 degree adaptor interface Angled adaptor interface protects your eyes from undesired contact with laser beam coming from the adaptors-Laser safety! Quick-stud system ensures easy closing /opening of the front cover Easy access with telescopic rail pull-out system Special protection tubes and bend radien for protecting the incoming fiber from bending and guiding the fibers to the special designed splice cassettes in a professional way Special splice cassettes of 12 or 24 port capacity with professional cable storage and protection 100% Compatible to Bellcore GR-326 standards Confirms to every type of connectors (ST, SC, FC, LC, MTRJ, E2000, etc.)