Horizontal type fiber closure has a flat or cylindrical outer housing to provide space and protection for fiber optic splices. It usually contains one or more fiber splice trays assembled to hold/protect optical fiber splices. The common fiber counts of per splice tray are 6, 12 and 24 fibers. So one fiber closure’s splice capacity could cover a range of 6- 288Fibers Totally.

They are commonly made of high tensile construction plastic, so they have good adaptability and compression re- sistance. At the same time, they have good waterproof and dustproof function. If attached to a pole or hung from wir- ing, these fiber splice closures need to be held firmly in place, to avoid damage from weather and wind. So This type of fiber splice closure is the most commonly used one in mounted aerials or buried underground.