A closure enclosing and protecting at least one line splice holder. The closure includes a first housing portion enclosing at least a portion of a hollow interior of the closure, the at least one line splice holder being located within the hollow interior. The first housing portion has a portal through which plural lines extend into the hollow interior. The closure includes a second housing portion actuatable with respect to the first housing portion to provide an additional portion of the hollow interior. The additional portion of the hollow interior is a volume to receive additional of the at least one line splice holder. The closure includes a coupling for connecting the second housing portion to the first housing portion.