Fiber optic closures are devices used to protect and seal the ends of fiber optic cables and splice points. These closures are typically made of plastic or metal and are designed to provide a sealed environment for the fiber optic connections while also allowing easy access for maintenance and repairs.

Fiber optic closures are used in a wide range of applications and environments, including:

Outside Plant (OSP) Network: They are used in OSP networks to protect and seal the fiber optic splice points and terminals in telephone poles, underground vaults, and other outdoor locations.

Inside Plant (ISP) Network: They are used in ISP networks to protect and seal the fiber optic splice points and terminals in buildings and other indoor locations.

Cable Television (CATV) Network: They are used in CATV networks to protect and seal the fiber optic splice points and terminals in head-ends, hubs, and other locations.

Wireless Networks: They are used in wireless networks to protect and seal the fiber optic splice points and terminals in base stations and other wireless network locations.

Data Centers: They are used in data centers to protect and seal the fiber optic splice points and terminals in racks, cabinets and other locations where fiber optic cables terminate.

Fiber optic closures are available in different sizes and designs depending on the application and environment they are used. They are also available in different protection levels (IP rating) to protect the splices from various environmental conditions such as water, dust, and temperature. They are also available in various capacities to accommodate different numbers of splices and fibers.