Panduit FRTR24X4LYL FiberRunner 24x4 Bend Radius Control Trumpet
Overview
The Panduit FRTR24X4LYL is a three-sided bend radius control trumpet engineered for fiber cable routing in data centers and telco central offices. Specifically designed for the FiberRunner® 24x4 system, it enforces a minimum 3-inch (76.2mm) bend radius wherever cables exit the 24x4 channel or a 24x4 horizontal tee — protecting fiber from microbend-induced attenuation at those vulnerable exit points. If you've ever seen a fiber run go dark after a rack refresh and traced it back to a tight bend at a channel exit, this fitting is the preventive fix.
The FRTR24X4LYL ships in yellow polycarbonate/ABS — matching the FiberRunner® 24x4 system's color coding so technicians can confirm compatibility at a glance during installation or post-installation audits. It's sold as a single unit, with a carton quantity of 5 for project-volume orders.
Key Features
- 3-Inch Bend Radius Enforcement (76.2mm): The trumpet's geometry physically prevents cables from folding tighter than 3 inches at the channel exit. This matters because multimode and single-mode fiber both carry bend-radius minimums — violate them and you get insertion loss that may not show up immediately but degrades over time. Passive enforcement at every exit point removes reliance on installer judgment.
- Polycarbonate/ABS Construction: This material combination gives the fitting the rigidity to hold cables in shape under typical data center cable loads, while remaining lighter than metal alternatives. It won't corrode in humid central office environments and resists the yellowing that cheaper ABS alone can develop under fluorescent lighting over years of service.
- Yellow Color Coding: The FiberRunner® system uses color to denote system size. Yellow identifies 24x4 channel components, so when a technician is auditing a packed pathway, they can confirm the trumpet belongs to the 24x4 run without pulling documentation. Reduces misconfiguration risk during adds, moves, and changes.
- Three-Sided Profile: The 3-sided design accommodates cable exits from the channel face while keeping the trumpet's footprint compact. With an overall width of 30.34 inches (770.6mm) and height of 7 inches (177.8mm), it spans the full 24x4 channel width — no portion of the cable exit is left unguided.
- Compatible with 24x4 Channel and Horizontal Tee: Works at two key transition points in a FiberRunner® 24x4 run — straight channel exits and horizontal tee junctions. Horizontal tees are where cable management problems most frequently develop in high-density data center network infrastructure, making trumpet coverage at both locations important for a complete bend-radius strategy.
- RoHS Compliant: Materials meet RoHS requirements — relevant for facilities with environmental compliance obligations or customers operating under EU directives. Verify your procurement documentation requirements match this compliance level.
- UL Listed to UL 2024 (Optical Fiber Cable Routing Assemblies): UL 2024 listing means the fitting has been independently tested to the standard for optical fiber cable routing assemblies. This matters for code compliance in commercial construction — AHJs and inspectors in many jurisdictions require listed products in plenum and riser pathways.
- Telcordia GR-63-CORE Network Equipment Building Systems Level 3 Compliance: This standard covers seismic, thermal, humidity, and other environmental stresses relevant to central office and telecom facility equipment. Level 3 compliance is the most stringent tier — applicable if you're installing in a seismic zone or a carrier-grade facility with NEBS requirements. If you're in a standard enterprise data center, this is additional margin you won't need to use; if you're a CLec, ILEC, or MSO, it's a procurement requirement you can check off.
Integration & Compatibility
The FRTR24X4LYL is purpose-built for the Panduit FiberRunner® product line, specifically the 24x4 channel system. It is not interchangeable with other FiberRunner® channel sizes — verify your channel size before ordering. The 24x4 designation indicates a 24-inch-wide by 4-inch-tall channel; if your installation uses a different height or width, a different trumpet part number applies.
Installation integrates with standard FiberRunner® 24x4 snap-in assembly methods. No tools are required for fitting attachment in typical configurations. For data center cable management projects specifying full bend-radius control across an entire FiberRunner® run, pair this trumpet at every channel terminus and horizontal tee exit to maintain consistent compliance throughout the pathway.
Given the 30.34-inch overall width, confirm rack bay or overhead pathway clearance before installation in tight equipment rooms. The 7-inch height may require planning around adjacent cable tray or conduit runs in dense ceiling spaces.
What's in the Box
- 1x Panduit FRTR24X4LYL FiberRunner® 24x4 Bend Radius Control Trumpet
Frequently Asked Questions
Q: What bend radius does the FRTR24X4LYL enforce?
A: The FRTR24X4LYL enforces a minimum 3-inch (76.2mm) bend radius at the cable exit point from the FiberRunner® 24x4 channel or horizontal tee. This is the designed mechanical limit built into the trumpet's geometry.
Q: Which FiberRunner® channel sizes is the FRTR24X4LYL compatible with?
A: The FRTR24X4LYL is designed specifically for the FiberRunner® 24x4 channel system — 24 inches wide by 4 inches tall. It is not interchangeable with other FiberRunner® channel sizes. Verify your channel dimensions before ordering.
Q: Is the FRTR24X4LYL UL Listed?
A: Yes. The FRTR24X4LYL is UL Listed to UL 2024 for Optical Fiber Cable Routing Assemblies. It is also RoHS compliant and meets the applicable tests in Telcordia GR-63-CORE Network Equipment Building Systems Level 3.
Q: Does the FRTR24X4LYL meet NEBS/Telcordia requirements for carrier-grade facilities?
A: Yes. The FRTR24X4LYL is compliant with the applicable tests in Telcordia GR-63-CORE Network Equipment Building Systems Level 3, which is the most stringent seismic and environmental tier. This makes it suitable for NEBS-compliant central office and carrier-grade deployments.
Q: What material is the FRTR24X4LYL made from?
A: Polycarbonate/ABS blend. This provides the structural rigidity needed to maintain bend radius control under cable load while remaining lighter than metal alternatives and resistant to corrosion in data center and telco environments.
Q: How many units come in a carton?
A: Cartons contain 5 units. The FRTR24X4LYL is sold individually (package quantity of 1), but orders for larger projects can be fulfilled in carton quantities of 5.
The detail that gets skipped on fiber pathway projects is the exit point — and the FRTR24X4LYL exists precisely to address that gap. With a 30.34-inch overall width spanning the full 24x4 channel face and a 3-inch minimum bend radius enforced mechanically, this fitting removes the single most common source of post-installation fiber loss I see in high-density data center builds: cables that looked fine during termination but folded tight at an unsupported channel exit after the installers left.
Technical Highlights:
- 3-Inch (76.2mm) Bend Radius: Passive geometric enforcement — the trumpet's curvature physically prevents the cable from bending tighter, regardless of how much tension is applied by overlying cable weight or pull-through. No labeling, no training, no inspector reliance required.
- UL 2024 Listing: Independent listing for optical fiber cable routing assemblies means the product meets a tested standard — not just a manufacturer claim. Relevant when an AHJ is reviewing your cable pathway design, particularly in plenum spaces where listed components are typically required by code.
- Telcordia GR-63-CORE Level 3: Level 3 is the top tier of NEBS environmental compliance. For a central office project with seismic requirements — California, Pacific Northwest, or carrier-grade facilities anywhere — this means you won't have to substitute a different part to satisfy the spec sheet. Enterprise data centers get this as margin they may never need.
Deployment Considerations:
- Measure overhead clearance before committing to this fitting in tight ceiling spaces — at 7 inches tall and 30.34 inches wide, it requires meaningful clearance above the channel run. In retrofit installations where adjacent conduit or cable tray is already routed, verify the envelope early in the design phase, not at pull time.
- The FRTR24X4LYL is specific to the 24x4 channel and horizontal tee — it does not adapt to other FiberRunner® channel sizes. Mixing channel sizes in the same run is common in phased buildouts; confirm every exit point uses the correct trumpet part number for its channel size before placing a project-scale order.
This fitting belongs on any new 24x4 FiberRunner® run in a carrier-class central office or high-density enterprise core where GR-63-CORE compliance is on the spec sheet and fiber loss budget is tight — the combination of passive bend-radius control, UL 2024 listing, and Level 3 NEBS compliance makes it a one-part answer to what can otherwise become a multi-phase troubleshooting problem.
