Panduit FOCLZ12 12-Fiber OM4 LSZH Indoor/Outdoor Bulk Fiber Optic Cable
Overview
The Panduit FOCLZ12 is a 12-fiber OM4 loose tube bulk fiber optic cable from Panduit's Opti-Core® line, engineered for deployments that cross the boundary between conditioned indoor spaces and outdoor or plenum-adjacent environments. If you're pulling cable through a riser, into a parking structure, or transitioning from a building MDF to a campus pathway, this is the cable that handles both environments without requiring a transition point or an outdoor-to-indoor splice — saving labor, hardware, and a potential failure point in the link.
With a fiber optic cable specification built around indoor/outdoor versatility, gel-free construction, LSZH jacket, and UV resistance, the FOCLZ12 addresses the practical tradeoffs installers face in mixed-use cable paths. It is part of the broader Panduit structured cabling and fiber infrastructure portfolio, designed for integration with standard LC, SC, and MPO termination hardware.
Key Features
- OM4 Multimode Fiber (50µm Core): OM4 glass supports 100G Ethernet up to 150 meters and 40G up to 150 meters — meaningful headroom if you're future-proofing a backbone segment or running between IDF and MDF closets where bandwidth demands will grow. The 50µm core diameter is compatible with all standard OM3/OM4 transceivers and patch panels.
- 12-Fiber Count: Twelve fibers in a single pull gives you enough capacity for six bidirectional duplex runs or three parallel 40G links — practical for a medium-density building riser or a secondary data closet feed. It's the right count when you need more than a 6-fiber drop but don't need the bulk and cost of a 24-fiber assembly.
- Indoor/Outdoor Rated: A dual-rated jacket eliminates the need for a separate outdoor-to-indoor transition fitting or a mid-run splice when the path moves from a protected interior to an exposed or semi-exposed segment. That means one cable, one pull, one less splice point to manage.
- Gel-Free Construction: No filling gel means no gel cleanup at termination points. Installers who have spent time wiping down gel-filled cables before splicing or connectorizing will recognize this as a real time saver, especially on high-fiber-count terminations where gel contamination can compromise connector performance.
- LSZH Jacket (Low Smoke Zero Halogen): In a fire event, LSZH compounds reduce toxic smoke and halogen gas output. This is the correct choice for buildings where fire codes or owner specifications call for LSZH — common in European installations, transit facilities, hospitals, and any space where occupant safety standards exceed standard PVC requirements. Verify local code compliance before substituting a standard jacket.
- UV Resistant Jacket: The outer jacket is formulated to resist UV degradation, which matters in semi-exposed pathways — rooftop conduit with UV-transparent sections, covered but open parking structures, or utility spaces with skylight exposure. UV degradation causes jacket brittleness and cracking over time; a UV-resistant jacket holds its mechanical properties in those conditions.
- Black Cable Jacket: The standard black jacket is conventional for outdoor and riser paths and provides no visual ambiguity when identifying cable type in mixed-infrastructure environments. Black also performs slightly better in UV-exposed environments than lighter-colored jackets.
Integration & Compatibility
The FOCLZ12 is a raw bulk fiber optic cable — it ships unconnectorized and requires field termination or factory pigtail fusion splicing. It is compatible with standard 50µm OM4 termination ecosystems: LC duplex, SC duplex, and 12-fiber MPO connectors. When integrating with structured cabling infrastructure, pair with Panduit Opti-Core OM4 patch panels, splice trays, and pre-terminated assemblies to maintain a consistent OM4 insertion loss budget across the link.
For network switch deployments driving 10G or 40G SFP+ transceiver links, OM4 provides the distance overhead that OM3 cannot — 300m vs. 100m at 10G — which matters when backbone runs exceed 100 meters. At 100G, OM4 gives you 150m; if your runs are shorter, OM3 is cost-neutral, but if you're unsure of final run lengths, OM4 is the right call.
LSZH compatibility with termination hardware should be confirmed with the connector manufacturer. Most commercial-grade LC and SC connectorization kits are material-agnostic, but adhesive-cure profiles can vary by jacket compound. When using fiber optic termination accessories, verify the epoxy system is rated for LSZH jacket adhesion.
Frequently Asked Questions
Q: What fiber type and core diameter does the FOCLZ12 use?
A: The FOCLZ12 uses OM4 multimode fiber with a 50µm core diameter, supporting 10G Ethernet up to 300 meters and 100G up to 150 meters.
Q: Is the FOCLZ12 gel-filled?
A: No. The FOCLZ12 uses gel-free loose tube construction, which eliminates gel cleanup during termination and speeds up field splicing and connectorization.
Q: Can the FOCLZ12 be installed outdoors?
A: Yes. The FOCLZ12 is rated for both indoor and outdoor use. Its UV-resistant jacket handles semi-exposed pathways, and the dual-rated design eliminates the need for a transition point at the building entry.
Q: What does LSZH mean for the FOCLZ12, and where is it required?
A: LSZH (Low Smoke Zero Halogen) means the jacket compound produces minimal toxic smoke and no halogen gases when exposed to fire. It is commonly required in hospitals, transit facilities, data centers with strict fire codes, and European installations. Verify your local building code before specifying LSZH vs. standard jacket.
Q: How many fibers does the FOCLZ12 contain?
A: The FOCLZ12 contains 12 individual fibers, providing capacity for six duplex runs or three parallel 40G links in a single cable pull.
Q: What termination connectors are compatible with the FOCLZ12?
A: The FOCLZ12 is compatible with standard 50µm OM4 connectors including LC duplex, SC duplex, and 12-fiber MPO formats. It ships unconnectorized and requires field termination or factory pigtail fusion splicing.
The FOCLZ12 is one of those cables that earns its keep not through headline specs, but through what it eliminates: the transition fitting, the mid-run splice, and the gel cleanup. With a gel-free 12-fiber OM4 LSZH construction, this Panduit Opti-Core cable is built specifically for the path that starts inside and ends outside — or vice versa — and you don't have to treat the building envelope as a demarcation point.
Technical Highlights:
- OM4 / 50µm Glass: Supports 100G at 150m and 10G at 300m — meaningful future-proofing on backbone segments where you can't easily re-pull cable once the ceiling or conduit is closed.
- Gel-Free Loose Tube: No filling compound to remove before termination. On a 12-fiber count, that's twelve individual connectorization points where gel contamination is not a risk — faster install, cleaner loss budget.
- LSZH + UV Resistance: Two compliance requirements addressed in a single jacket compound. LSZH satisfies fire code in restricted-occupancy spaces; UV resistance handles the exposed segments in semi-open pathways without a separate UV-rated outer conduit.
Deployment Considerations:
- This cable ships unconnectorized — factor termination labor and connector hardware into your project cost. For high-density terminations, pre-terminated pigtail assemblies spliced to the trunk may be faster than field polishing twelve connectors per run.
- LSZH jacket adhesion can behave differently with certain epoxy systems. Confirm that your LC or SC connectorization kit is rated for LSZH compound before committing to a termination method, especially on adhesive-cure approaches.
The FOCLZ12 is the right specification for a campus building-to-building backbone or a mixed indoor/outdoor riser pull where a single dual-rated pull eliminates the splicing labor and hardware of a two-cable approach — particularly in LSZH-required occupancies like healthcare facilities, transit terminals, or high-occupancy commercial buildings.
