1000W XL toplighting with Flexstar's patented Liquid Optics System — 3.2 µmol/J across a full 4×6 ft canopy footprint.
The Flexstar Redline 1000W XL is a 10-bar, full-spectrum commercial toplighting fixture engineered around Flexstar's patented Liquid Optics System (LOS) — delivering 3.2 µmol/J efficiency and up to 3,200 µmol/s PPF at 1,000W draw with a sealed, fanless body rated IP66 for real grow-room conditions.
The Redline 1000W XL is Flexstar's flagship full-spectrum toplighting fixture for licensed indoor cultivation. It runs at 1,000W draw, spans a 10-bar chassis built for a 4×6 ft canopy footprint, and delivers up to 3,200 µmol/s PPF at 3.2 µmol/J — the efficiency rating that puts it at the top tier of commercially deployed LED fixtures.
The defining technology is Flexstar's patented Liquid Optics System (LOS). Where conventional fixtures lose photons to lens yellowing, gaps in the reflector, and mounting geometry, LOS uses a bidirectional silicone-gel optical medium that achieves 99% optical efficiency, routes heat away from the LED junction bidirectionally, and seals every light bar against the dust, humidity, fertilizer mist, and wash-down chemistry of a working grow room. The result is a fixture that puts more usable photons on the canopy per watt drawn — and keeps doing it for a rated 54,000 hours at Q90 (90% lumen maintenance) without maintenance.
The 1000W XL is the non-SpecTune variant of the platform: a fixed full-spectrum design optimized for balanced vegetative and flowering performance, dimming from 25% to 100% via 0-10V with spectrum integrity maintained across the range. Operators who want independent UV and far-red channel steering should spec the SpecTune model instead.
The Redline 1000W XL is sized for commercial multi-bay operations where predictability and density matter more than in-cycle recipe flexibility. At 4×6 ft per fixture, it tiles cleanly across standard bay widths on rolling benches or fixed rack tiers, and the 10-bar geometry gives uniform PPFD distribution across that full footprint without the hot-spot concentration common in narrower bar arrays.
It is the correct choice for facilities running high-throughput, consistent genetics where a proven fixed spectrum handles both veg and flower, the team does not want to manage per-channel trim across hundreds of fixtures each cycle, and the priority is maximizing canopy density and photon output per circuit. The 0-10V dimming interface integrates with virtually any commercially deployed grow controller — no proprietary gateway required for basic intensity control.
Operators converting from 1,000W double-ended HPS will find the 4×6 footprint familiar. The LOS fixture runs passive cooling — no fans, no moving parts — so noise profile and HVAC interaction are both simplified relative to active-cooled alternatives.
Liquid Optics System (LOS): Flexstar's patented optical platform fills each sealed bar with a bidirectional silicone-gel medium that simultaneously maximizes photon transmission (99% optical efficiency) and pulls heat away from the LED junction. Measured LED operating temperature drops 9–15°F versus conventional thermal paths, which directly extends diode life and slows lumen depreciation.
Sealed, fanless enclosure: The fully sealed lens and light-bar assembly carries an IP66 rating — dustproof and protected against direct water jets. Pesticide mist, CO2 injection, and routine wash-down do not interrupt operation. Cleaning requires only a wipe-down; no disassembly, no filter changes.
Dimming and control: 0-10V analog dimming (25%–100%) with spectrum integrity maintained across the dimming range. Daisy-chain support for up to 80 fixtures per channel simplifies deployment in large, multi-bay rooms. Voltage options of 120V, 240V, and 277V accommodate most US facility electrical standards.
Certifications and warranty: ETL, DLC, CE, and TISI listed. Five-year manufacturer warranty. Backed by Flexstar's 15+ years of commercial horticultural lighting manufacturing.
At 1,000W and a 4×6 ft footprint, the Redline XL is designed for direct tiling — one fixture per standard bench or rack tier section. In a multi-tier vertical grow, the sealed IP66 body means no special vapor barriers are needed around the fixture, and the passive thermal management keeps radiant heat from the fixture face lower than fan-cooled alternatives, which matters when stacking tiers with tight vertical separation.
For large floor installations, the 0-10V daisy-chain architecture (up to 80 fixtures per control channel) means a single controller zone can handle a full production bay without per-fixture wiring runs. Operators who need recipe-driven spectral control — independent UV and far-red steering across the growth cycle — should spec the Redline SpecTune variant, which shares the identical LOS platform and footprint but adds independent channel control via RS485 + 0-10V.
HSC carries the full Flexstar Redline line. Contact us for volume pricing, quantity availability, and project-specific light plans across any facility footprint.
| SKU | FLRL-1000AR5-XL |
| Input Power | 1,000W |
| PPF Output | Up to 3,200 µmol/s |
| Efficacy (PPE) | 3.2 µmol/J |
| Bar Count | 10 bars |
| Coverage Footprint | 4 × 6 ft |
| IP Rating | IP66 |
| Lifespan | 54,000 hrs @ Q90 |
| Dimming | 0-10V (25%–100%) |
| Input Voltage Options | 120V / 240V / 277V |
| Cooling | Passive — fanless, bidirectional silicone-gel LOS thermal management |
| Warranty | 5 years |
Both fixtures share the same Liquid Optics System platform, 1,000W draw, and IP66-sealed body. The standard 1000W XL runs a fixed, optimized full-spectrum output — ideal for large facilities that want a set-and-run solution with 0-10V dimming and no per-channel management. The SpecTune variant adds independent UV and far-red channels (controlled via RS485 + 0-10V) for operators who dial in spectrum recipes through veg, stretch, and flower rather than running a single fixed spectrum.
Yes. The IP66 rating means the fixture is sealed against dust ingress and direct water jets. The fully sealed light-bar construction with the LOS silicone-gel medium means no exposed diodes or open lens gaps for chemical mist to penetrate. Routine grow-room sanitation — hose-down, pesticide spray, nutrient mist — does not require fixture removal or covers.
The Redline 1000W XL supports daisy-chain control of up to 80 fixtures per 0-10V control channel. In a multi-bay facility, this means a single controller output can govern a full production bay with no per-fixture wiring runs. Compatible with most commercially deployed grow room controllers that output a standard 0-10V signal.
In a conventional LED grow bar, light passes through air gaps and a secondary plastic or glass lens — both of which scatter photons and accumulate heat at the junction. Flexstar's patented LOS fills the sealed bar with a bidirectional silicone-gel optical medium that transmits 99% of generated photons to the canopy with minimal scatter, while simultaneously conducting heat away from the LED junction in both directions. The practical results are measurably lower LED junction temperature (9–15°F reduction), slower lumen depreciation, and a 54,000-hour Q90 lifespan without active cooling.
Yes. The Redline series carries ETL, DLC, CE, and TISI certifications. DLC listing is relevant for operators in markets where utility rebate programs require it — check your utility's current qualified products list for exact eligibility by SKU.
Get operator-direct pricing and availability. We supply licensed commercial cultivators nationwide.
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