ThinkGrow Model-H Plus LED Grow Light Built for Tight-Clearance Vertical Racks
720W input drives over 1,944 µmol/s PPF at 2.7 µmol/J across 3,368 Samsung LM301B and LH351H 660nm diodes on 8 plug-and-play bars. The 5-foot fixture mounts as low as 6 inches above canopy — clearance that matters in stacked vertical racks where pendants won't fit. Autosensing 347-480V input handles three-phase commercial wiring without a voltage-specific SKU swap.
4-Channel Spectrum Control for Vertical Farming LED Layouts
Four channels tune independently: UV, full-spectrum white, deep red (660nm), and far red. Recipes shift across veg, stretch, and finishing without swapping fixtures. Far red triggers earlier flowering but pushes stretch — dial it in during transition rather than full veg. The Hydro-X driver daisy-chains up to 256 fixtures via TrolMaster's LMA-T adapter, and IP56 housing tolerates flowering-room humidity.
Key Features
- 720W Input / 1,944 µmol/s PPF: 2.7 µmol/J efficacy keeps amp draw at 1.55A on 480V wiring, which simplifies breaker sizing in multi-fixture rooms.
- 4-Channel Adjustable Spectrum: UV, full-spectrum white, deep red (660nm), and far red tune independently for stage-specific recipes from veg through finishing.
- 6-Inch Minimum Mounting Height: The 8-bar layout drops in close to canopy where pendant fixtures cannot, fitting stacked vertical racks with minimal ceiling clearance.
- Autosensing 347-480V Input: Three-phase commercial wiring works without selecting a voltage-specific SKU, keeping spec sheets and replacement parts consistent across rooms.
- TrolMaster Hydro-X Compatibility: Daisy-chains up to 256 fixtures via the LMA-T lighting adapter for unified scheduling, dimming, and spectrum control from one panel.
- IP56 Wet Rating: Sealed against dust and high-pressure water, suitable for high-humidity flowering rooms and wash-down vertical racks.
- 5-Year Warranty / >54,000 Hour L90 Lifetime: Manufacturer coverage long enough to span several flowering cycles per year on continuous-production schedules.
- Patented Plug-and-Play Light Bars: Individual bars swap without re-wiring the driver, keeping a fixture in service when a single bar fails.
Technical Specifications
| Specification | Value |
|---|---|
| Input Power | 720W |
| PPF | ≥1,944 µmol/s |
| Efficacy | ≥2.7 µmol/J |
| Input Voltage | Autosensing 347-480V |
| Amp Draw | 2.09A @ 347V / 1.55A @ 480V |
| Power Factor | ≥90% |
| Diodes | 3,368 Samsung LM301B + LH351H 660nm |
| Spectrum Channels | 4 (UV / Full-Spectrum White / Deep Red / Far Red) |
| Mounting Height | ≥6" (15.2 cm) Above Canopy |
| Veg Footprint | 5 × 5 ft |
| Flower Footprint | 4 × 4 ft |
| IP Rating | IP56 |
| Lifetime | L90 >54,000 hrs |
| Group Control | TrolMaster Hydro-X (up to 256 fixtures via LMA-T) |
| Warranty | 5 Years |
| Fixture Design | True 5-foot wide, 8 LED bars on single driver |