DMSI optical cables are exclusively made in the USA and are UL listed. Cables are available in many construction types including tight buffer, micro 250, ribbon, dry loose tube, and one and two fiber interconnect. Outer jackets are moisture, fungus, and UV resistant for use in outdoor applications. Cables are water blocked to meet GR-409-CORE requirements. Interlocking armored cables feature a jacketed aluminum spiral wrap protecting the cable contained inside. They offer superior crush resistance, rodent protection, and eliminate the need for innerduct or conduit. DMSI optical cables are exclusively made in the USA and are UL listed.