16 Core Fiber Optic Distribution Box

A:​ A 16-core fiber optic distribution box (also called a 16-port fiber distribution closure or micro ODC) is an outdoor or indoor enclosure serving as a distribution node in FTTx passive optical networks. It accommodates up to 16 SC adapter ports for subscriber drop cables, and internally houses PLC splitter modules and fusion splice trays to split and manage feeder fiber signals. The GL-MDC-16N is specifically designed for compact MDU and FTTB building deployments, with four mounting modes including ADSS aerial and Mobra arm manhole configurations.

A:​ Nylon PA66 (polyamide 66) is an engineering thermoplastic used in automotive and industrial components for its superior flexibility, impact absorption, and cold-temperature performance. Compared to standard PC+ABS used in most fiber distribution boxes, Nylon PA66 remains ductile and flexible down to −40°C (PC+ABS can become brittle in extreme cold), weighs approximately 20–30% less for the same volume (critical for ADSS aerial load limits), and tolerates repeated opening/closing cycles better. The GL-MDC-16N's 1.4 kg weight is achievable because of the density advantage of Nylon over PC+ABS blends.

A:​ ROE (Ripartitore Ottico di Edificio) is the Italian standard for an optical building distributor - the last splitting point before signal reaches individual apartment subscribers in an MDU FTTH network. ROE is defined in UNI 11531 and used by Italian operators Open Fiber, TIM, Fastweb, and Flash Fiber. The GL-MDC-16N meets ROE 16 U.I. specifications: 16 SC/APC subscriber ports, compatible PLC splitter cassette (1×16 for full capacity), and a separable internal optical core that can be extracted from the housing and placed inside Type B/C hybrid column cabinets - the standard building integration format in Italian FTTH architecture.

A:​ A Mobra arm is a standardized bracket system used inside underground telecom manholes and street cabinets to organize fiber and copper distribution equipment on a single mounting rail. The GL-MDC-16N bracket kit supports installation of up to two closures on a single Mobra arm - positioned perpendicularly to avoid cable interference - effectively doubling subscriber capacity per arm position from 16 to 32. This dual-closure configuration is particularly valuable in dense urban underground infrastructure where physical space in manholes is severely constrained and multiple service operators may share the same chamber.

A:​ ADSS (All-Dielectric Self-Supporting) aerial cable installation of the GL-MDC-16N uses the dedicated hanger kit: (1) Clamp the hanger bracket to the ADSS cable at the distribution point without cutting the cable; (2) Feed the feeder cable through the mid-span loop-through port - the cable passes through the closure without service interruption; (3) Splice the tap fiber inside the closure using one of the 24F splice trays; (4) Route drop cables through the drop cable ports to the 16 SC/APC adapter positions; (5) Re-seal the IP68 closure and check mechanical balance. The GL-MDC-16N's 1.4 kg weight is designed to remain within safe ADSS cable point-load limits for cable diameters 16–22mm.

A:​ The GL-MDC-16N holds up to three 24-fiber flip-open splice trays, providing a total fusion splice capacity of 72 fibers. Each tray operates independently - you can open one tray for maintenance or new splicing without disturbing the other two. Trays accept standard 60mm heat-shrink splice protectors. All splice positions maintain a minimum fiber bend radius of ≥30mm through the tray's internal guide rails, preventing long-term micro-bend attenuation at the splice points.

A:​ Yes. The internal cassette slot accepts both 1×8 mini-type PLC splitters (for 8-subscriber MDU floor deployments) and 1×16 cassette-type PLC splitters (for full 16-subscriber ROE capacity). The module is field-replaceable: if your subscriber count grows from 8 to 16 on a given floor, the 1×8 splitter can be swapped for a 1×16 without replacing the enclosure or disturbing existing drop cable connections. Blockless (mini-type) and cassette (module-type) splitter formats are both supported.

A:​ The GL-MDC-16N is a compact micro closure (250×220×90mm, 1.4 kg, Nylon housing) designed for MDU building risers, ADSS aerial cables, manhole Mobra arms, and Optotec ROE deployments - all space-constrained environments where form factor and mounting flexibility are critical. It uses fusion splice architecture (3×24F trays). The GL-ODB-16R is an outdoor distribution box with FastConnect pre-connectorized technology, optimized for rapid no-splice deployment on outdoor poles and walls for FTTH last-mile. Choose GL-MDC-16N for MDU/FTTB and constrained environments; choose GL-ODB-16R for open outdoor FTTH rapid deployment.

A:​ The GL-MDC-16N is available with MOQ of 10 pcs for standard configurations. Sample orders (1–3 pcs for qualification testing) ship within 3 business days. Standard batch orders (10–200 pcs) have a 15–20 business day lead time. OEM/ODM orders (custom color, logo, port layout, or Optotec-specific adaptations) require a 7-day engineering review plus 20–35-day production. Full CE/RoHS compliance certificates and IEC test reports are provided with every order. Volume pricing tiers are available from 50 pcs. Contact us for a detailed quote.