Panduit FRTR24X4LBL FiberRunner 24x4 Trumpet Bend Radius Spillout
Overview
The Panduit FRTR24X4LBL is a 3-sided bend radius control trumpet designed for use with Panduit's FiberRunner 24x4 fiber routing system in data centers and telco central offices. When fiber exits a 24x4 channel or horizontal tee, uncontrolled bends can degrade signal performance or cause permanent damage. This trumpet enforces a minimum 3-inch (76.2 mm) bend radius at the exit point, protecting cable integrity without guesswork. The polycarbonate/ABS construction is black, blending with standard fiber cable management infrastructure.
Key Features
- 3-Inch Minimum Bend Radius Control: Physically limits cable exit angles to 3 in. (76.2 mm) — the critical threshold where most optical fiber begins accumulating microbend losses. Passive enforcement means no reliance on installer judgment under deadline pressure.
- Fits 24x4 FiberRunner Channel and Horizontal Tee: Dimensioned specifically for the 24x4 system (30.34 in. wide / 770.6 mm). Drop-in compatibility with the Panduit FiberRunner family means no custom fabrication or adapters. Reference the FRTR24X4LBL when specifying to confirm fit.
- Polycarbonate/ABS Construction: This material pairing gives you impact resistance from the ABS layer and dimensional stability from the polycarbonate — important in a high-density cable tray environment where trays get bumped during maintenance and ambient temperatures fluctuate with CRAC cycling.
- Overall Dimensions — 30.34 in. W × 7 in. H × 5.28 in. L: Wide footprint matches the 24x4 channel width exactly. The 7-inch height and 5.28-inch length give adequate cable transition depth so bundles don't get forced into sharp angles just past the trumpet exit.
- RoHS Compliant: Material restrictions are met, which matters for data centers with EU-export equipment or green-building certification requirements where restricted substances in cable management hardware can trigger compliance flags.
- UL Listed — UL 2024 Optical Fiber Cable Routing Assemblies: UL 2024 listing means this fitting has been independently tested for use in optical fiber routing assemblies. Relevant when AHJ sign-off requires listed fiber routing components throughout a structured cabling installation.
- Telcordia GR-63-CORE NEBS Level 3 Compliant: NEBS Level 3 is the benchmark for equipment in carrier-grade central offices — covers seismic, thermal, airflow, and mechanical shock. If you're installing in a telco CO or any facility held to NEBS, this compliance is a hard requirement, not a nice-to-have.
- Sold as Single Unit, Carton Qty 5: Buy the exact quantity needed. Carton packs of 5 suit larger projects; single-unit procurement works for phased builds or maintenance stock without committing to a full carton.
Integration & Compatibility
The FRTR24X4LBL is engineered for the FiberRunner 24x4 channel system and its associated horizontal tees. It is not dimensioned for 12x4, 6x4, or other FiberRunner channel sizes — confirm your channel width before ordering. The fitting integrates into the Panduit FiberRunner ecosystem used across enterprise data centers, co-location facilities, and telecom central offices where structured fiber routing is required at scale.
What's in the Box
- 1x Panduit FRTR24X4LBL 3-Sided Bend Radius Control Trumpet
Frequently Asked Questions
Q: What channel size does the FRTR24X4LBL fit?
A: The FRTR24X4LBL is designed specifically for Panduit's 24x4 FiberRunner channel and the 24x4 horizontal tee. It is not compatible with other FiberRunner channel widths.
Q: What bend radius does this trumpet enforce?
A: The FRTR24X4LBL limits the cable bend radius to a minimum of 3 inches (76.2 mm) when fiber exits the 24x4 channel.
Q: Is the FRTR24X4LBL UL Listed?
A: Yes. It is UL Listed to UL 2024 for Optical Fiber Cable Routing Assemblies and compliant with the applicable tests in Telcordia GR-63-CORE NEBS Level 3.
Q: Is the FRTR24X4LBL RoHS compliant?
A: Yes. The FRTR24X4LBL meets RoHS restricted substance requirements.
Q: How many pieces come in a carton?
A: The carton quantity is 5 units. The FRTR24X4LBL is also available for purchase as a single unit (package quantity 1).
Q: What material is the FRTR24X4LBL made from?
A: The fitting is constructed from polycarbonate/ABS, providing impact resistance and dimensional stability in high-density cable tray environments.
The FRTR24X4LBL is a component I recommend specifying by name on any 24x4 FiberRunner bill of materials where fiber exits to horizontal distribution — the 3-inch bend radius enforcement is passive and permanent, which removes a common source of post-installation signal degradation that's frustratingly hard to trace back to a cable management fitting.
Technical Highlights:
- 3 in. (76.2 mm) Bend Radius: Hard-geometry enforcement at the spillout point — no installer training or cable tie discipline required to maintain this threshold after the build is closed up.
- 30.34 in. Width: Matches the 24x4 channel exactly, so there's no gap that lets a cable bundle sag and self-bend just past the trumpet lip — a failure mode I've seen on mismatched fittings.
- NEBS Level 3 / UL 2024: If your project touches a telecom central office or any NEBS-governed facility, this compliance is non-negotiable. The combination with UL 2024 listing covers both enterprise AHJ and carrier sign-off requirements.
Deployment Considerations:
- Confirm channel designation before ordering — the FRTR24X4LBL is dimensioned for the 24x4 system only. Installing it on a 12x4 channel will result in gaps that defeat the bend control purpose.
- At 30.34 inches wide and 7 inches tall, this fitting requires clear vertical clearance above the channel exit point. Measure overhead obstructions (cable ladders, conduit runs, drop-ceiling structure) before finalizing raceway routing in dense overhead spaces.
In a greenfield data center or telco CO build where Panduit FiberRunner 24x4 is the primary horizontal fiber pathway, this fitting belongs at every channel exit — specifying it upfront is cheaper than tracking down signal margin issues after commissioning.
