The Charles Industries 1x4 Splitter Module (CFSM-FM1104AA-H, Millennium part 521171) divides one incoming fiber into four SC/APC outputs, letting PON techs fan a single feed out to multiple drop legs at a splice cabinet or FDH. It's built for outdoor and indoor fiber distribution enclosures on GPON and similar architectures. The compact module drops into standard splitter housings without custom mounting. Millennium also stocks 1x32 and 2x32 splitter modules from Charles Industries for larger split ratios on the same platform.