Precision-length spacing cord for Flexstar UCL daisy-chain runs on vertical racks.
The Flexstar UCL 1ft / 30cm Extension Cord is the purpose-built interconnect for spacing Flexstar Under Canopy LED fixtures along a rack bar — giving you a controlled gap between bars without looping a full-length power cord back to the panel. Built to match the sealed connector system on the UCL fixture line.
The Flexstar UCL Extension Cord in the 1ft / 30cm length is a short-run interconnect designed specifically for the Flexstar Under Canopy LED fixture system. The UCL line uses a proprietary end-to-end connection architecture that allows fixtures to snap together seamlessly in a daisy chain — up to 17 units per run. When your layout calls for a deliberate gap between two fixtures or two bars rather than a flush end-to-end connection, this cord bridges that gap cleanly without requiring a full-length cord routed back to the power source.
At 30cm, this is the shortest cord in the UCL extension cord lineup (a 3ft variant also exists). It is used when fixtures need only a small physical offset — typically the width of a rack upright, a structural column, or a spacing bar — while keeping the daisy chain electrically continuous. The cord terminates with the matching UCL male/female connectors used throughout the fixture line, so there is no adapting or workarounds required.
In a multi-tier vertical rack build or rolling bench setup, under-canopy LED runs rarely line up perfectly fixture-to-fixture for every inch of the bench. Rack uprights, irrigation manifold mounts, trellis net attachment points, and structural breaks all create moments where a flush daisy chain connection is not physically possible. Without an extension cord, the only option is to run a new power cord all the way back to the nearest outlet — which adds cord clutter, increases the number of branch circuit connections, and complicates load balancing.
The 1ft cord solves this specifically for tight gaps — rack-column clearances, corner brackets, or the 6–12 inch dead zones at the ends of a bench run. Operators running large Flexstar UCL deployments across multi-tier racks typically stock both the 1ft and 3ft variants to handle the full range of spacing scenarios encountered across different row widths and rack footprints.
This cord is engineered for the Flexstar UCL fixture ecosystem. The UCL 120W fixtures support 120V, 240V, and 277V input, are IP66-rated for water and dust resistance, and carry ETL, DLC, and CE certifications. The daisy-chain system is also compatible with the Flexstar Zeus controller for 0–10V dimming via RJ11 — the extension cord carries both the power and control signal connections required for that integration to remain intact across the gap.
Because the UCL fixture itself is IP66-rated, the extension cord is designed to maintain that sealed connection integrity at each junction. Using a non-OEM cord risks breaking the moisture-resistant seal at the connection point — a real consideration in any cultivation environment where foliar spray, irrigation overspray, or high humidity is part of normal operations. Sticking to the Flexstar-native cord keeps your UCL installation consistent with the fixture's rated protection.
This cord is sold as a single unit. Facilities planning a new UCL installation or adding tiers to an existing vertical rack build should map their bench geometry before ordering to determine the right mix of 1ft and 3ft extension cords needed. The number of extension cords required depends on how many fixture-to-fixture transitions involve a structural break rather than a flush connection.
HSC supplies Flexstar UCL fixtures and accessories to licensed cannabis and hemp cultivation operators across the United States. If you are spec'ing a full UCL installation — fixtures, power cords, extension cords, and Zeus controller integration — contact HSC for a consolidated quote. We can work through the layout with you to make sure the cord count matches your actual rack configuration before product moves.
| SKU | 10-010704-350 |
| Brand | Flexstar |
| Cord Length | 1 ft / 30 cm |
| Compatible Fixture Line | Flexstar UCL (Under Canopy LED) |
| Function | Daisy-chain spacing interconnect |
| Connector Type | Flexstar UCL proprietary male/female (matches UCL fixture ports) |
| UCL Fixture IP Rating | IP66 (fixture line; cord designed to maintain sealed connection) |
| Compatible Voltage Range | 120V / 240V / 277V (per UCL system) |
| Controller Compatibility | Flexstar Zeus X2 (0–10V dimming via RJ11 carried through chain) |
| Sold As | Single unit |
Length only — both use the same UCL-native connectors and carry the same power and RJ11 control signals through the daisy chain. The 1ft cord is for tight clearances like rack uprights or bracket offsets where only a few inches of gap exist. The 3ft cord covers wider structural breaks or situations where fixtures need to be spread across a larger physical gap. Most large installations use both.
This cord is listed as a Flexstar UCL system accessory. Confirm fixture-to-cord compatibility with HSC at quote time, particularly if you are running the 150W variant, to ensure the connector format matches your specific fixture generation.
The Flexstar UCL extension cords are designed to maintain a sealed connection consistent with the fixture line's IP66 rating. Using a non-OEM or generic cord at the junction point may compromise that seal. For any grow environment with irrigation spray or high ambient humidity, using Flexstar-native cords at every connection point is the safer choice.
The UCL daisy-chain architecture carries both AC power and the RJ11 control signal through the chain. The extension cord is designed to bridge that full connection — meaning Zeus controller dimming commands remain active across the gap. If only power were bridged, fixtures downstream of the extension would lose controller integration.
It depends entirely on your rack geometry. Every fixture-to-fixture transition that involves a structural break — a rack upright, a column, a spacing bar — needs at least one extension cord. Map your bench runs, identify how many non-flush transitions exist per row, and tally across all tiers. Contact HSC with your layout and we can help you work through the cord count before you order.
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