Panduit FRTSC12LYL FiberRunner 12x4 Horizontal Tee Split Cover

The Panduit FRTSC12LYL is a two-section split cover designed specifically for the FiberRunner 12x4 horizontal tee fitting (FRT12X4LYL), used in data centers and central office telecommunications environments where fiber routing channels require protected, accessible cable management at branch points. Measuring 22.25 inches wide and 18 inches in overall length, this yellow polycarbonate/ABS cover snaps into place without tools and creates a 19mm rounded opening at the access point — making it practical for adds, moves, and changes without disturbing adjacent cable runs. If you're building out a fiber cable management infrastructure using the FiberRunner system, this cover is the correct finish component for horizontal tee junctions.

Key Features

• Tool-Free Clip-On Installation: The snap-fit design means installers can mount and remove this cover without reaching for a screwdriver or wrench. In high-density data center rows where dozens of tee fittings may need covers, this translates directly to faster commissioning time and easier post-installation moves — no dropped fasteners in a live fiber tray.
• 19mm Rounded Cable Access Opening: The two-section construction creates a 19mm rounded aperture at the tee junction, sized to let technicians add or pull individual fiber cables without lifting the entire cover. This matters during incremental fiber builds or when adding circuits to an active tray — the opening is large enough for a standard LC or SC connector body.
• Polycarbonate/ABS Construction: The material blend gives you impact resistance from polycarbonate and dimensional stability from ABS. In a data center infrastructure environment where covers may be removed and reinstalled repeatedly over years of MACs, this combination holds clip geometry better than pure ABS and resists the brittleness that all-polycarbonate can develop under UV or repeated flex stress.
• NEBS Level 3 Compliance (Telcordia GR-63-CORE): NEBS Level 3 is the qualification standard for equipment deployed in carrier-grade central office and telco environments — covering seismic, thermal, and airflow requirements. If your project is a carrier central office or a colocation facility with telco anchor tenants, this compliance is often a procurement requirement, not a nice-to-have. Most generic cable management covers don't carry this certification.
• UL-Listed Fiber Optic Cable Routing Assembly (to 2024A): UL listing to the 2024A standard for optical fiber routing assemblies is relevant for compliance with NEC Article 770 in commercial and data center builds. Having a UL-listed cover on a UL-listed tee body keeps the entire assembly compliant without requiring a field evaluation or special inspection.
• RoHS Compliance: RoHS conformance means the cover can be specified into EU-destined projects and government-mandated environmentally restricted substance programs without a materials exception process.
• FiberRunner System Color Coding (Yellow): Yellow in the FiberRunner system conventionally identifies single-mode fiber pathways. Maintaining consistent color coding across covers, channels, and fittings reduces misrouting risk during maintenance — a technician working in a populated tray can identify the fiber type and routing path at a glance without tracing cables end-to-end.
• Low-Profile Dimensions (2.88" / 73.2mm Height): At under 3 inches tall, the FRTSC12LYL adds minimal vertical profile above the tee fitting. In overhead cable tray installations with tight clearances to raised flooring, above-ceiling structure, or adjacent equipment, this keeps the assembly within standard clearance envelopes.

Integration & Compatibility

The FRTSC12LYL is engineered exclusively for the Panduit FiberRunner 12x4 system — specifically the FRT12X4LYL horizontal tee fitting. It is not a universal cover and will not fit FiberRunner 6x4, 4x4, or other channel widths. Before ordering, confirm your installed tee fitting is the 12x4 variant. The snap-fit geometry is matched to that fitting's rail profile; substituting a cover from a different size family will result in a loose or non-seating fit that defeats both the protection and the aesthetic function of the assembly.

This cover is part of Panduit's broader wire routing management and protection product line. Within the FiberRunner 12x4 family, complementary components include straight channel sections, reducers, elbows, and end caps — all available in the same yellow colorway for single-mode fiber runs. Covers are sold individually (Package Qty: 1); if you're outfitting multiple tee fittings at once, carton quantity is 5 units.

What's in the Box

• 1x Panduit FRTSC12LYL FiberRunner 12x4 Horizontal Tee Split Cover (Yellow)

Frequently Asked Questions

Q: What tee fitting is the FRTSC12LYL designed to cover?

A: The FRTSC12LYL is designed specifically for the Panduit FiberRunner 12x4 horizontal tee fitting, model FRT12X4LYL. It is not compatible with other FiberRunner channel widths or competing fiber routing systems.

Q: Does the FRTSC12LYL require tools to install or remove?

A: No. The cover uses a clip-on snap-fit design that installs and removes without tools, which simplifies both initial installation and future cable access at the tee junction.

Q: What is the access opening size created by the two-section design?

A: The two-section construction creates a 19mm rounded opening at the tee point, sized to allow individual fiber cables to be added or removed without lifting the entire cover.

Q: Is the FRTSC12LYL compliant with NEBS Level 3?

A: Yes. The FRTSC12LYL meets Telcordia GR-63-CORE and Network Equipment Building Systems (NEBS) Level 3 requirements, making it suitable for carrier-grade central office and telco facility deployments where NEBS compliance is a specification requirement.

Q: Is the FRTSC12LYL RoHS compliant?

A: Yes. The FRTSC12LYL is RoHS conformant, supporting use in EU-regulated projects and government programs with restricted substance requirements.

Q: How many covers come in a carton, and how is it sold?

A: The FRTSC12LYL is sold individually (package quantity of 1). Carton quantity is 5 units if ordering in bulk.

Marty Allison

The FRTSC12LYL gets overlooked until someone's building out a FiberRunner 12x4 horizontal tee and realizes the fitting ships without a cover — then it becomes a line item fast. The clip-on, tool-free design is the right call for data center cable management environments where repeated fiber MACs are the norm; you're not torquing down fasteners every time a circuit needs to be added. The 19mm rounded access opening is a thoughtful detail that lets a technician fish a single cable through without disturbing the rest of the tray.

Technical Highlights:

• NEBS Level 3 / Telcordia GR-63-CORE: This is the compliance standard that separates telco-grade from commercial-grade. If your project spec sheet calls out NEBS Level 3, this cover satisfies it — most generic alternatives don't, and substituting a non-compliant cover on a compliant channel invalidates the assembly rating.
• Polycarbonate/ABS Material: The blend matters over a 10-15 year asset life. Pure ABS develops clip fatigue; pure polycarbonate gets brittle under repeated thermal cycling. The combination holds dimensional tolerance on the snap-fit rails through hundreds of open/close cycles — relevant in any facility with active fiber management.
• 22.25" / 565.2mm Width: This is a wide cover — wider than many installers expect for a 12-inch channel designation. Budget the overhead clearance and confirm your tray layout before ordering a full carton of 5; the footprint at a tee junction is larger than it looks on the spec sheet.

Deployment Considerations:

• This cover fits ONLY the FRT12X4LYL horizontal tee — not vertical tees, reducers, or other 12x4 fittings. Order by the specific fitting type, not just channel size.
• Yellow colorway is specific to single-mode fiber conventions in the FiberRunner system. If your installation mixes single-mode and multimode runs, verify color-coding discipline with your team before populating covers — swapping colors mid-project creates tracing headaches during future maintenance.

The FRTSC12LYL is the correct finish component for any carrier central office, colocation, or enterprise data center build using the FiberRunner 12x4 horizontal tee — particularly where NEBS Level 3 compliance is a hard project requirement and repeated cable access is anticipated.