Primarily used for fiber distribution and termination (e.g., splitting, patching, and connecting fibers). Common in FTTH (Fiber-to-the-Home), data centers, and indoor/outdoor distribution points. Often includes patch panels, splitters, and adapters for easy management.

Mainly used for protecting fiber splices and providing a sealed environment (e.g., splicing and storing excess fiber). Typically used in underground, aerial, or direct-buried installations where environmental protection is critical. Focuses on mechanical protection and sealing rather than active distribution.