UCL Extension Cord 3ft/90cm

What It Is

The Flexstar UCL Extension Cord is the manufacturer-supplied accessory cable for the Flexstar Under-Canopy LED fixture line. The UCL system is designed for seamless end-to-end daisy-chaining — fixtures snap together in a contiguous run. This 3ft cord inserts between any two fixtures in that chain, adding controlled separation between bars without breaking the electrical or communication path.

This is not a generic extension cord. It is an OEM cable matched to the proprietary connector system used across the Flexstar UCL product family, ensuring a secure, moisture-resistant connection consistent with the fixture's wet-location design. If your layout requires a gap between any two fixtures in a run — for a rack upright, a structural member, or a deliberate spacing interval — this is the correct part.

Who Needs It and When

This cord is a practical necessity on vertical rack builds. When UCL bars are deployed on multi-tier vertical racks, the rack uprights, cross-members, or shelf lips often interrupt what would otherwise be a flush end-to-end connection. A 3ft extension bridges that gap cleanly, keeping the daisy chain intact across the obstacle.

It also matters on rolling bench configurations with irregular bay widths, or in any installation where fixture centers need to be spaced further apart than a direct connection allows. For facilities running the Flexstar Zeus or Zeus X2 controller for 0–10V dimming, the extension cord maintains the RJ11 communication path through the daisy chain so control signals pass through uninterrupted — all fixtures in the run remain on the same dimming channel.

Order quantity depends on your fixture count and layout. Operations installing UCL bars across multiple rack tiers or bench rows typically need several per circuit run — plan for one per gap, not one per fixture.

Flexstar UCL Ecosystem Context

The Flexstar UCL 120W fixture supports daisy-chain runs of up to 17 units per line, with up to 160 units controllable through a single Flexstar Zeus controller. The fixture itself is IP66 rated for dust and water resistance, ETL, DLC, CE, and FCC certified, and operates across 120V, 240V, and 277V input. It delivers up to 340 µmol/s PPF at 120W draw, with a 120° beam angle suited for side-lighting and downward under-canopy applications.

The extension cord is part of the accessory ecosystem that makes large-scale UCL deployments practical. Alongside the standard power cord and communication cable included with fixture packs, the 3ft extension fills the specific gap that rack geometry creates. Flexstar's design intent is that facilities should be able to build out any bench or rack configuration without compromising the daisy-chain architecture — this cord is the field solution for layouts where fixtures cannot sit flush.

Buying Through HSC

Hydro Supply Co. carries the full Flexstar UCL accessory line through a direct vendor account with Flexstar. That direct relationship means pricing through HSC is positioned below what you'd typically find through open-market distribution — and you're working with a single point of contact who knows the full ecosystem, not a retail channel that stocks only the hero SKUs.

If you're spec'ing a new UCL installation or adding tiers to an existing rack build, request a quote with your fixture count and bay dimensions. HSC can help you figure out exactly how many extension cords your layout requires before you commit to a quantity. Shipping is available to licensed cannabis and hemp operations nationwide.