Panduit FRFWCSC4LBL FiberRunner 4x4 Split Cover 4-Way Cross
Overview
The Panduit FRFWCSC4LBL is a split cover designed specifically for the 4x4 FiberRunner 4-way cross fitting used in data center and telecom central office fiber routing systems. Where fiber pathways intersect and branch in four directions, a bare cross fitting leaves cables exposed to physical damage and tangled during future adds or moves. This cover closes the fitting while creating access openings that let you add or remove cables without disturbing runs already in the tray — the split design means you never have to pull a cable out to get the cover back on. It fits the fiber routing management infrastructure that larger facilities depend on to keep structured cabling organized, protected, and maintainable over the life of the installation.
Sourced factory-new from Panduit cable management, this cover ships individually (Package Qty: 1) with carton quantities of 5, making it straightforward to stock extras for future expansion without over-ordering.
Key Features
- Split cover design: The cover opens to allow cable insertion or removal at any point in the run — you are not locked into a sequence when adding fiber drops to an existing cross. On a live data center floor where minimizing disruption is non-negotiable, this is the detail that prevents a simple cable add from becoming a multi-hour re-routing job.
- Purpose-fit for 4x4 FiberRunner cross fittings: This cover mates to the 4x4 FiberRunner system geometry (12.95 in × 12.95 in footprint, 2.15 in height). It will not fit 2x2, 4x2, or 6x4 FiberRunner fittings — confirm your installed cross size before ordering. Using a correctly sized cover eliminates gaps that collect debris or catch cable jackets during pulls.
- Polycarbonate/ABS construction: The PC/ABS blend gives the cover the rigidity to hold its shape under the weight of a full fiber bundle while remaining light enough not to add meaningful load to ladder rack or J-hooks supporting the fitting. In high-density telecom rooms where fitting counts run into the hundreds, material weight adds up.
- UL Listed per Standard 2024A: UL 2024A covers assemblies for optical fiber cable routing — meaning this cover has been independently evaluated for the specific application it is sold for. For enterprise IT and telecom facilities where AHJ inspections are routine, UL listing on the cable management layer avoids the back-and-forth that unlisted components can trigger.
- NEBS Level 3 / Telcordia GR-63-CORE compliance: NEBS Level 3 is the standard carriers and CLECs require for equipment installed in central offices and colocation facilities. If the installation is in a telco CO or a Tier III/IV colo that enforces NEBS, this cover meets the seismic, thermal, and environmental requirements of GR-63-CORE without requiring a variance or substitution.
- RoHS compliant: Meets EU Restriction of Hazardous Substances requirements. Relevant when the project involves EU-based facilities, multinational enterprise rollouts, or procurement frameworks that mandate RoHS across all installed components — not just active electronics.
- Black (RAL) finish: Matches standard FiberRunner system aesthetics. On open-frame racks and exposed overhead trays where visual uniformity matters to facilities teams, consistent color across fittings, straight sections, and covers keeps the installation looking purpose-built rather than patched together.
- Compact overall profile: At 12.95 in × 12.95 in × 2.15 in, the cover adds minimal height above the cross fitting. In overhead tray installations with limited ceiling clearance, that 2.15 in height is worth confirming against your routing plan before committing to a specific tray elevation.
Integration and Compatibility
The FRFWCSC4LBL is designed exclusively for use with the Panduit 4×4 FiberRunner system. FiberRunner is a wire routing and cable management product line built for structured fiber distribution in data centers and telecommunications central offices. The system uses a consistent cross-section across straight sections, 90-degree bends, tees, and 4-way crosses — covers are not interchangeable across channel sizes. Confirm the installed cross part number is a 4×4 FiberRunner fitting before ordering this cover. Compatible fittings, straight sections, and bends are available across the Panduit FiberRunner catalog.
For large data center builds requiring a structured cabling plan, FiberRunner system components including crosses, tees, bends, and end caps are typically specified together at the design phase to ensure consistent channel sizing end-to-end.
What's in the Box
- 1× Panduit FRFWCSC4LBL FiberRunner 4x4 Split Cover for 4-Way Cross (black, PC/ABS)
Frequently Asked Questions
Q: What fitting is the FRFWCSC4LBL designed to cover?
A: The FRFWCSC4LBL is designed specifically for the Panduit 4×4 FiberRunner 4-way cross fitting. It will not fit 2×2, 4×2, 6×4, or other FiberRunner channel sizes — verify the cross fitting's channel dimensions before ordering.
Q: Does the FRFWCSC4LBL meet NEBS requirements?
A: Yes. It complies with the relevant tests in Telcordia GR-63-CORE and meets NEBS (Network Equipment Building Systems) Level 3 requirements — the standard required for installation in telecommunications central offices and carrier-grade colocation facilities.
Q: Is the FRFWCSC4LBL UL Listed?
A: Yes. It is UL Listed per Standard 2024A for optical fiber cable routing assemblies. This listing is relevant for installations subject to AHJ inspection or enterprise facilities requiring listed cable management components.
Q: How many covers come per package?
A: The FRFWCSC4LBL ships as a single unit (Package Qty: 1). Carton quantity is 5 units, so you can order multiples for large installations without buying full cases if you only need a few.
Q: Is this cover RoHS compliant?
A: Yes. The FRFWCSC4LBL is RoHS compliant, making it suitable for deployments subject to EU hazardous substances restrictions or enterprise procurement policies that mandate RoHS across all installed components.
Q: What are the overall dimensions of the FRFWCSC4LBL?
A: The cover measures 12.95 in × 12.95 in (328.9 mm × 328.9 mm) in footprint with an overall height of 2.15 in (54.6 mm). Confirm available clearance above the cross fitting in overhead tray installations before finalizing tray elevation.
The FRFWCSC4LBL comes up on nearly every large FiberRunner deployment I spec — not because it is glamorous, but because skipping it creates a real maintenance problem. At 12.95 in × 12.95 in, the 4×4 cross is a significant opening in your fiber tray system, and leaving it uncovered in a production data center or carrier CO means every cable pull risks snagging on the fitting edge. The split design is the part that earns its keep after the installation is live.
Technical Highlights:
- NEBS Level 3 / GR-63-CORE: This is not a marketing claim — NEBS Level 3 is a tested standard. If you are installing in a telco CO or a carrier-contracted colo, the GR-63-CORE seismic and environmental requirements are enforceable. Having the cover already rated means you are not chasing a variance after the fact.
- UL Listed 2024A: UL 2024A is specific to optical fiber cable routing assemblies — not a generic listing. For enterprise builds where the AHJ or corporate facilities team requires listed components at the cable management layer, this is the relevant certification to have documented in the project closeout package.
- PC/ABS construction: Polycarbonate/ABS handles the physical reality of a high-density fiber tray — cable bundle weight, incidental contact during moves, and thermal cycling in a raised-floor environment — without the brittleness of straight polycarbonate or the flex of cheaper ABS-only parts.
Deployment Considerations:
- The 2.15 in (54.6 mm) height adds to the fitting's total profile above the tray baseline. In overhead installations with tight plenum clearance or in-rack vertical cable managers where inches matter, verify that height is accounted for in your routing elevation before you set the tray height.
- This cover fits the 4×4 FiberRunner cross only — not 2×2, 4×2, or 6×4. FiberRunner cross part numbers are size-specific, and it is easy to mix up a 4×2 and a 4×4 on a large project BOM. Pull the installed cross MPN and confirm the channel size before the covers ship.
The FRFWCSC4LBL is the right call on any carrier CO or Tier III/IV data center build where NEBS Level 3 compliance is a contract requirement and the fiber routing system uses 4×4 FiberRunner crosses — it satisfies the compliance checkbox and the practical maintenance requirement in a single part.
