Telecommunications equipment in the nature of closures for splicing and terminating fiber optic cables; closure kits comprised of trays specially adapted for splicing fiber optics, and also including enclosure domes and bases, clamps, o-rings, gel sealing blocks, cable port plugs, tray towers, and cable retention hardware; closure kits comprised of trays specially adapted for splicing fiber optic and copper cables, and also including enclosure domes and bases, clamps, o-rings, gel sealing blocks, cable port plugs, tray towers and cable retention hardware; fiber optic splicing accessories, namely, splice trays, multi-cable sealers, mounting hardware, slack storage baskets, splitters and multiplexers; mounting hardware for mounting telecommunication closures; mounting kits for mounting telecommunication closures containing mounting hardware and brackets; telecommunications apparatus and instruments, namely, mechanical splice closures, tool-less splice closures, fiber optic splice housings, fiber optic splice boxes, and modular building blocks being modular telecommunications equipment closure and housings; signal transmission apparatus, namely, fiber optic connectors and fiber optic cables; fiber optic instruments in the nature of apparatus and instruments for conducting, switching, transforming, accumulating optical signals, namely, fiber optic splice closures, fiber optic splice housings, fiber optic splice boxes, fiber management hardware, fiber optic connectors, fiber optic plugs, fiber optic adapters, fiber optic splices, fiber optic splice trays, fiber optic splice cassettes, fiber optic cables, fiber storage baskets, fiber optic terminals, fiber optic distribution hubs.