Fiber optic connectors; fiber optic tool kits consisting primarily of safety eyeglasses, frame-station fixures, optical fiber strippers, optical fiber jacket strippers, and carrying cases, for use in installing optical fibers; cabinets, enclosures, frames, racks, racking, interbay management panels, end guards, and cabinet doors for mounting, holding, housing, or storing electrical, electronic, communications, and telecommunications equipment, and for routing, organizing and/or insulating cables used therewith; splice trays, holders, cassettes, and sleeves used for electrical making splices in electric and fiber optic cables and electric wires; adapters, and adapter plates; pigtails; patch cords; fiber optic cable assemblies, namely, cables with attached connectors; telecommunication network interface devices (nids); ducting for cable and wire management; ducting for electric and fiber optic cable and wire management; joiners for attaching ducting, raceway and trays to each other; unistruts, wire racks, mounting hardware, tooling, and suspension kits for attaching ducting to ceilings, floors, and walls; tubing, trumpets, downspouts, and vertical tees for use at cable and wire ducting entry and exit points; elbows for redirecting routing and changing heights of cables and wires; end caps for closing off and sealing ends of trays and ducting; fiber optic cable storage loops; reducers to join ducting of different sizes together; data and telecommunications multiplexers, adapters, adapter plates, splitters, couplers, and connection modules; fiber optic multiplexers, adapters, adapter plates, splitters, couplers, and connection modules; optical communications multiplexers, adapters, adapter plates, splitters, couplers, and connection modules; and optical branching components