FLEXSTAR 800W Pro 4*6

What It Is

The Flexstar 800W Pro (SKU 307133) is an eight-bar, foldable LED top-light designed for commercial indoor cultivation. It runs at 800W true draw across a 120V–277V input range, pushing 2200 µmol/s of photosynthetic photon flux through Samsung 301B/301H and OSRAM diodes — the same emitter stack you find in purpose-built commercial fixtures at significantly higher price points.

The fixture ships in a folded configuration and opens flat to cover a 4×6-foot canopy footprint. The driver is detachable from the bar array, which keeps heat separated from the canopy and simplifies replacement or service in the field. Passive cooling handles thermal management — no fans, no moving parts, nothing to replace mid-cycle.

Flexstar has been manufacturing and supplying commercial horticultural lighting since 2009. The Pro line sits in their full-cycle commercial tier, specced for operators who need one fixture to run veg and flower rooms without swapping hardware between phases.

Who It's For

Licensed cannabis and hemp operators running commercial veg, transition, or flower rooms in the 4×6 fixture footprint. Facilities that have standardized on a single fixture type across multiple rooms benefit from the Pro's full-cycle capability — no dedicated veg fixture, no swap-out at flip.

It's also a practical retrofit for operators currently running double-ended HPS or older-generation LED who want to reduce heat load and power draw without a full controls overhaul. The 0–10V dimming interface is compatible with most commercial environmental controllers already deployed in licensed grows, so integration doesn't require a separate protocol bridge.

The IP66 waterproof rating means it holds up to washdown procedures — standard practice in regulated facilities with sanitation protocols between harvests. For multi-tier vertical builds, the passive design and foldable form factor also allow tighter row spacing than actively cooled fixtures with external exhaust.

Key Technical Features

Diodes: Samsung 301B/301H and OSRAM emitters deliver a full-spectrum output calibrated for photosynthetic efficiency across all growth stages. Full-spectrum coverage means a single recipe drives both vegetative and generative phases without the spectral gaps that can stall transition.

Thermal management: Passive convective cooling with no internal fans eliminates a common failure point and keeps acoustic levels at zero — relevant in regulated facilities with occupied adjacent spaces. The detachable driver physically separates the heat-generating power conversion stage from the light bars, reducing thermal stress on the emitters and extending rated lifespan.

Controls: 0–10V analog dimming scales from low-intensity propagation through full-power flower without signal interruption. The fixture supports networked control of up to 160 units simultaneously, which matters when you're dialing uniform PPFD targets across a large multi-light room. Rated lifespan is L90 greater than 54,000 hours, and the fixture carries a 5-year manufacturer warranty.

How It Fits a Commercial Build

A 4×6 fixture layout means each unit covers roughly 24 square feet of canopy. For a standard 10×20 flower room, a four-fixture array achieves full canopy saturation with minimal overlap — plan your hanging height and PPFD targets accordingly, and the 2200 µmol/s output gives you headroom for high-DLI flowering protocols without pinning the dimmer at 100%.

The 120–277V input range covers single-phase 120V, split-phase 240V, and commercial three-phase panel taps at 208V or 277V, so the fixture adapts to whichever electrical infrastructure your facility runs without step-up transformers or line conditioning.

Because the driver is detachable, facilities can mount the driver externally — on a rail above the fixture or on the grow room wall — to keep all radiant heat above the canopy zone and simplify driver replacement without pulling the bar array. For operators building out new rooms or retrofitting benching configurations, HSC can coordinate fixture-count planning alongside benching and racking specs to help you model canopy density and hanging grids before equipment ships.