Panduit CLT75F-C4 Corrugated Slit Loom Tubing 3/4" x 100ft Yellow
Overview
The Panduit CLT75F-C4 is a 0.75-inch inside diameter corrugated polyethylene loom tubing designed to protect wire bundles and pre-assembled harnesses from abrasion, crush impact, and routing hazards in indoor electrical and low-voltage installations. At 100 feet per roll (30.48 meters), it covers full-run conduit replacements or large wire harness assemblies without mid-run splices. The slit-wall construction is what differentiates this from closed corrugated conduit: you can drop cables into the channel without threading, which makes mid-installation changes practical in panel builds, cable trays, and machine wiring enclosures.
If you're sourcing from the Panduit wire management line, the CLT75F-C4 sits in their corrugated loom tubing family alongside smaller and larger diameters — yellow coloring makes it straightforward to apply color-coded routing schemes in multi-circuit installations.
Key Features
- Slit-wall design for retrofit and harness installation: The full-length slit lets you load a pre-assembled wire harness or add cables to an existing run without disconnecting terminations. In machine wiring and panel builds, this eliminates the rework cost of threading. Secure the loaded tube with cable ties at intervals to close the slit and keep the bundle contained.
- 0.762" (19.35mm) inside diameter: Sized for mid-gauge wire bundles — larger than the standard 1/2-inch loom but below the 1-inch range, making it a practical fit for 6–12 conductor bundles in control cabinets and harness assemblies. Verify your bundle OD before ordering; the inside diameter is the critical spec, not the nominal 0.75" label.
- Polyethylene construction with UL 94 HB flammability rating: UL 94 HB is the baseline horizontal burn classification — material self-extinguishes under controlled conditions but is not rated for vertical burn applications. Suitable for indoor wire protection where UL 94 V-0 or V-2 is not specifically required. If your installation is in a plenum or requires a higher flame class, evaluate the appropriate Panduit loom variant.
- 122°F (50°C) maximum temperature rating: Adequate for standard indoor cabinet and conduit environments. Not appropriate for engine bays, near heat-producing industrial equipment, or any environment where ambient or radiant temperatures regularly approach or exceed 50°C. Plan routing away from heat sources in panel installations.
- 100-foot roll (30.48m) per package: A single roll covers most full-bay panel wiring jobs or extended cable tray runs without seaming. For projects requiring multiple rolls, the yellow color ensures visual consistency across the full run, which matters when you're color-coding circuits in a multi-tier rack or distribution panel.
- RoHS compliant: Meets the EU Restriction of Hazardous Substances directive — relevant for OEM equipment manufacturers who need to document component compliance in their own product declarations. Not a performance differentiator for most field installations, but a required checkbox for CE-marked equipment assemblies.
- Yellow color for circuit identification: Yellow is a recognized circuit differentiation color in many wiring standards and in-house conventions. Using CLT75F-C4 alongside other CLT colors lets you build a visual routing map across a panel or harness system without labeling every run.
Integration & Compatibility
The CLT75F-C4 is compatible with standard Panduit cable tie accessories for closing and securing the slit opening at intervals along the run. It is suitable for wire management applications in indoor control panels, low-voltage security and access control wiring, machine harness assemblies, and structured cabling support runs. It is not rated for outdoor, wet location, or direct UV exposure use — polyethylene without UV stabilization degrades under prolonged sunlight exposure.
At 0.762" ID, confirm bundle diameter before deployment. Overfilling a loom tube compromises abrasion protection and makes it difficult to secure the slit closed. For larger bundles, Panduit offers wider CLT variants in the same family. For installations requiring higher-rated conduit or plenum-rated flexible conduit, this product is not the appropriate choice.
What's in the Box
- 1x Panduit CLT75F-C4 corrugated slit loom tubing, 0.75" ID x 100ft, yellow polyethylene
Frequently Asked Questions
Q: What is the inside diameter of the CLT75F-C4?
A: The inside diameter is 0.762 inches (19.35mm). The nominal 0.75-inch designation refers to the approximate trade size, but the actual usable ID is 0.762 inches. Verify your wire bundle's outer diameter fits within this clearance before ordering.
Q: Can the CLT75F-C4 be used outdoors?
A: No. The CLT75F-C4 is rated for indoor applications only. Polyethylene without UV stabilization degrades under prolonged outdoor sun exposure, and this product does not carry a wet-location or outdoor rating. For outdoor wire protection, select a UV-stabilized or outdoor-rated loom variant.
Q: What flammability rating does the CLT75F-C4 carry?
A: UL 94 HB — the horizontal burn classification. This is the baseline flame retardancy level and is appropriate for standard indoor enclosures. It is not a V-0 or V-2 vertical burn rating, so if your application requires a higher flame class (e.g., plenum or specific UL listing), you will need a different product.
Q: How is the slit tubing kept closed after loading cables?
A: Panduit recommends securing the loaded CLT75F-C4 with cable ties and compatible accessories at regular intervals along the run. The corrugated ribs provide natural tie placement points. Without securing, the slit will remain open and the bundle will be exposed.
Q: What is the maximum temperature the CLT75F-C4 can handle?
A: The maximum temperature rating is 122°F (50°C). This covers typical indoor cabinet and tray environments. Avoid routing near heat-generating equipment or in spaces where ambient temperatures regularly approach this limit.
Q: Is the CLT75F-C4 RoHS compliant?
A: Yes. The CLT75F-C4 meets RoHS (Restriction of Hazardous Substances) compliance requirements, which is relevant for OEM manufacturers documenting component-level compliance in CE-marked equipment assemblies.
The CLT75F-C4 is one of those products where the slit is the entire value proposition. At 0.762" ID across a 100-foot roll, it's dimensioned for mid-range wire bundles in control panels and harness assemblies, and the slit-wall polyethylene construction means you're not threading conductors — you're loading them laterally and tying off. That workflow difference is significant in production environments where harnesses are pre-terminated before protective sleeving goes on.
Technical Highlights:
- 0.762" actual inside diameter: The 0.75" nominal is a trade-size label; the usable opening is 0.762 inches. That's enough clearance for typical 6–10 conductor bundles in 18–22 AWG range, but measure your bundle OD before committing to a full-run order at this diameter.
- UL 94 HB flammability: Horizontal burn classification — it meets the minimum threshold for most indoor panel and enclosure applications. This is not a V-0 rating, so don't spec it into applications where the AHJ or UL listing sheet calls for self-extinguishing vertical burn performance.
- 50°C maximum operating temperature: That's 122°F. Fine for standard control cabinets and structured cabling environments. In any enclosure where heat-generating equipment is in proximity, verify your worst-case ambient against that ceiling before routing the CLT75F-C4 nearby.
Deployment Considerations:
- The slit needs to be actively secured — the tubing does not self-close. Plan your cable tie spacing before you load the bundle; the corrugated ribs give you a natural cadence for tie placement, but skipping this step leaves the bundle exposed at every flex point.
- This is an indoor-only product. Polyethylene without UV stabilization will embrittle and crack with prolonged outdoor or direct-sunlight exposure. If the routing exits a building or passes near a skylight, CLT75F-C4 is not the right call.
For control panel integrators building color-coded harness systems in security, access control, or industrial automation enclosures, the CLT75F-C4 delivers a clean, serviceable yellow-coded run in a single 100-foot roll — practical for full-bay wiring without seams.
