The TotalGrow HI-Top light bar is an ideal, cost-effective, utility-incentive-friendly fit for greenhouse or indoor top-lighting with rugged construction and a narrow-profile body that mounts easily to support structures. Excellent efficacies are maximized by a versatile and highly effective grow spectrum, minimal shadowing, and optional side reflectors for uniform light delivery. Daisy-chain power and dimming control for low cost installation and operation.

Total Grow High Intensity Top Light Features:
- 330W or 640W power at 2.5-2.8 μmol/J for the light intensities your plants need
- Robust, reliable and streamlined design for simple utilization
- Full spectrum for exceptional versatility
- Shorten growth cycles
- Improve yields and quality
- Reliably produce year-round
- Reduce 40-60% of energy compared to HPS
- Long, low maintenance life
- Excellent light uniformly
- Easy installation with the included hangers
- Versatile, efficacious, aesthetic spectrum
What's Included:
- TotalGrow High Intensity Top Light (330W or 640W)
- Hanging brackets
- TotalGrow HI-Top 60" Power Cord w/NEMA 5-15P 120V Plug
Available from the Manufacturer:
- TotalGrow HI-Top 156" Linking Power Cord

Specifications
| HI-Top Product Specifications: | HI-Top 330 | HI-Top 640BF |
|---|---|---|
| Product Number | TG33B4-R0J-28-D1-K0BJ6 | TG64B4-R2J-25-D1-K0BA6 |
| Output | 910 μmol/s | 1610 μmol/s |
| Efficacy | 2.8 μmol/J | 2.5 μmol/J |
| Power Consumption | 330W | 640W |
| Input Voltage (VAC) | 100-277 |
100-277 |
| Daisy-Chain Limit @120/240V | 4 / 7 lights |
2 / 4 lights |
| Current @120/240V | 2.9 / 1.5 Amps | 5.6 / 2.8 Amps |
| Length x Width x Height | 25 x 3 x 4 inches | 43 x 3 x 4 inches |
| Weight (lbs.) | 6 (bar) + 4 (driver) = 10 | 11 (bar) + 6 (driver) = 17 |
| Dimmable | 0-10V + 12V aux power | 0-10V + 12V aux power |
| Projected Service Life / Warranty | 50,000 hours / 5 year | 50,000 hours / 5 year |
| Waterproof | IP66 | IP66 |
General Usage Guidelines
| Light Level Target | Low | Medium | High | ||||
|---|---|---|---|---|---|---|---|
| Plant Size | Small | Medium | Large | ||||
| Examples | Germination, Cuttings, Microgreens | Late Propagation, Lettuce, Basil | Tomatoes | ||||
| 330W | 640W | 330W | 640W | 330W | 640W | ||
| Supplemental (Greenhouse Sun + TotalGrow Lights) | Light Intensity (PPFD) | 50 μmol/m2/s | 100 μmol/m2/s | 300 μmol/m2/s | |||
| Coverage (sq. ft.) | 170 | 325 | 80 | 170 | 25 | 50 | |
| Spacing (ft) | 13 | 18 | 9 | 13 | 5 | 7 | |
| Height | 7-11 | 10-15 | 5-8 | 7-11 | 3-5 | 4-6 | |
| Sole Source (100% TotalGrow Lighting) | Light Intensity (PPFD) | 120 μmol/m2/s | 270 μmol/m2/s | 1000 μmol/m2/s | |||
| Coverage (sq. ft.) | 72 | 140 | 30 | 60 | 9 | 16 | |
| Spacing (ft) | 8.5 | 12 | 5.5 | 8 | 3 | 4 | |
| Height | 5-6 | 7-9 | 3-4 | 5-6 | 2 | 3 | |