In general, Inline Closure is a high-quality protective casing that can be quickly and easily connected to the distribution path. Inline closure provides high network flexibility, scalability and uninterrupted fiber/cable connections without the need for splicing.
It is designed for use with microtubes or modular cables. Direct connection is achieved simply by cutting a single tube and connecting them to a new tube via a push-in connector. The fiber can then be blown through this point without additional stitching.
The above is how Inline Closure works and what it does.
information about Inline Closure : https://www.greentelftth.com/product/fiber-optical-splice-closure/inline-fiber-optical-splice-closure/