A main fanout includes a plurality of intermediate fanout devices that are connected to one another. Each intermediate fanout device can be assembled separately and then connected together to form the main fanout. Each intermediate fanout device is connected to an intermediate cable of a main cable and a plurality of optical fibers of each intermediate cable is positioned within at least one furcation tube. The plurality of optical fibers and at least one furcation tube are secured to a main body of each intermediate fanout device. Each intermediate fanout device includes a mating feature to connect to adjacent intermediate fanout devices with a like mating feature. The mating feature reduces relative movement between adjacent intermediate fanout devices.