FLEXSTAR UV Bar 18W

What It Is

The Flexstar UV Bar 18W is a purpose-built supplemental light bar focused entirely on the 395nm UV-A band — the wavelength range associated with secondary metabolite production in cannabis and other high-value crops. At 18 watts per strip, it draws virtually nothing relative to your primary canopy fixtures, making it practical to add UV coverage across an entire flowering room without meaningfully impacting your electrical load or HVAC baseline.

The bar is designed to mount above the canopy alongside 600W-and-above primary fixtures — hanging between rows or strapped to existing fixture frames. Flexstar ships it in a two-bar kit with a link cable and power cable included, so the hardware you need to get the first two bars online arrives in the box.

Who It's For

This bar is aimed at licensed cannabis and hemp operators who are already running a well-dialed canopy spectrum and want to layer targeted UV exposure on top during mid-to-late flower — not operators looking for a primary light source. If your main fixtures don't carry a discrete, controllable UV channel, the Flexstar UV Bar fills that gap without requiring a fixture swap or a controls retrofit.

It also fits facilities running Flexstar's own primary bar systems, where the UV bars integrate cleanly into the same dimming infrastructure. Because the bars daisy-chain on simple wiring with up to 92 strips on a single run, a multi-room or large single-room facility can scale UV coverage across the entire footprint without multiplying power drops.

Key Features

The daisy-chain architecture is the primary operational feature for commercial installs: up to 92 bars can link off a single run, which means you're not engineering a new circuit for every row. Control is handled at the head of the chain and propagates through — straightforward to integrate with an existing dimming schedule so UV ramps alongside your main canopy lights during the photoperiod.

IP66-rated housing means the bar holds up in high-humidity flowering environments without special handling. Flexstar's 18W FR & UV bar line is rated L90 greater than 50,000 hours, so at typical commercial duty cycles you're looking at multi-year operational life before meaningful lumen depreciation. The bar is compatible with standard multi-bar fixture mounting hardware, so it drops into most commercial canopy setups without custom fabrication.

How It Fits a Flowering Room Build

In a standard commercial flowering room, the UV bars mount between or adjacent to primary fixtures — the same rails, the same hanging points. Power the lead bar from your existing circuit, link subsequent bars with the included cables, and integrate dimming into whatever light controller or timer your room is already running. The low per-bar wattage means you can add one bar per fixture position without bumping your panel capacity.

The UV exposure window during flower is typically targeted at mid-to-late bloom — many operators run UV supplementation for a defined daily window rather than the full photoperiod, which is easy to schedule through a separate timer leg or a controller channel. The Flexstar UV Bar's dimming compatibility makes ramping in and out over the course of a cycle straightforward rather than an all-or-nothing switch.