In fact, in addition to underground applications, Fiber Optic Splice Closure are also used in antenna, harness-mounted FTTH "tap" positions where the drop cable is bonded to the distribution cable. It is typically used with outdoor fiber optic cables to provide splicing space for outdoor fiber optic cables. The fiber splice closure and the internal fiber optic tray will protect the connection between the splice fiber and the outdoor fiber optic cable. Typically, fiber optic splice closures are of the horizontal type and the dome type (also known as the vertical type). Horizontal types are more common than vertical type (dome-type) closures. Horizontal type Horizontal type splicing closures look like flat or cylindrical boxes that provide space and protection for fiber optic cable joints and fittings. They can be installed in antenna, buried or underground applications. Most horizontal fiber splice boxes can be installed with hundreds of fiber optic connections. They are designed to be waterproof and dustproof. They are available in temperatures from -40 ° C to 85 ° C and can withstand pressures from 70 to 106 kPa. The case is usually made of high-strength construction plastic. Vertical type The vertical fiber optic splice box looks like a dome. This is why they are also known as domes. They use the same specifications as the horizontal type. They are usually designed for burial applications.