Feature: Providing protective connections for optical fibers and distribution pigtails Unsuitable for outdoor use. If necessary, please take appropriate protective measures Insulating fiber metal components from fiber-end shells and conveniently leading out grounding wires Providing spaces for placing fiber terminals and redundant fibers, thus making installation more convenient The box can be firmly fixed to prevent against strong shock, thus adapting to different applications of installation Multiple installation methods are available, e.g. wall-mounting, rack-mounting or direct mount in the trough