Available in flat or cylindrical designs, these closures can be buried underground or mounted aerially as needed. Wall-mount and pole-mount fiber boxes represent two installation categories within ODN infrastructure, each designed to withstand different mechanical forces, environmental exposure, and cable-routing geometries. Some are small pedestals themselves. Each type has a particular application and probably every application has a special closure. Special hardware may be necessary for handling different cable or splice. The mounting mechanism—whether wall, rack, or pole-mounted—must also fit the physical constraints of the site. FO-VC2 JOINT USE - VERICAL MIDSPAN CLEARANCES 48. It provides environmental protection to the spliced fibers, ensuring their integrity and longevity in various outdoor.