2178-S-2172 [3M]

The 3M™ Fiber Optic Splice Closure 2178 family provides flexible fiber management solutions for complex networks. It includes seven distinct models (XSB, XLB, S, SL, LS, LL, XL) in flame-retardant and non-flame-retardant versions. The closures accommodate various cable types (loose/tight buffer tube, central tube, discrete/ribbon fiber, armored/dielectric) and applications (aerial, buried, underground, vault, building entrance). Key features include scalability for future expansion, reusable gaskets for easy re-entry, flexible tray systems for splice inserts, and compatibility with mechanical/fusion splicing. Designed for reliability and ease of installation, the family offers solutions for diverse network segments including metropolitan, long haul, local access, and premises networks.