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TotalGrow High Intensity Top-Light 345W Bar LED Grow Light

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MODEL: TG33B4-1pk
Order today, ships between December 18 - January 5, 2026
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About TotalGrow High Intensity Top-Light 345W Bar LED Grow Light

Full Spectrum

Type

345W

Power

Coverage

5 Years

Warranty

TotalGrow High Intensity Top-Light 345W Bar LED Grow Light

Looking for energy-efficient lighting that delivers maximum intensity for your indoor or greenhouse growing operation?

The TotalGrow High Intensity Top-Light 345W Bar provides professional-grade illumination designed to maximize plant growth with minimal energy consumption.

Perfect for commercial growers seeking high-output lighting with versatile mounting options for greenhouses or indoor cultivation facilities.

Delivering 907µmol/s output with outstanding 2.6 µmol/J efficacy, this streamlined fixture produces the light intensities your plants need while qualifying for utility incentives to reduce operational costs.

The narrow-profile body measures just 25" x 3" x 4" and mounts easily to existing support structures with minimal shadowing. Daisy-chain capability allows connecting up to 4 units on 120V or 8 units on 240V circuits for simplified installation and reduced wiring costs.

Constructed with an IP66 waterproof rating and backed by ETL and DLC certifications, this durable fixture features a 50,000-hour lifetime and comes with a comprehensive 5-year warranty for long-term reliability.

Product Highlights

  • Exceptional 2.6 μmol/J efficacy with 907μmol/s output from 345W power draw
  • Streamlined 25" x 3" x 4" design minimizes shadowing in greenhouse applications
  • Full spectrum light for versatile plant growth across all stages
  • Optional side reflectors ensure uniform edge lighting distribution
  • IP66 waterproof rating with ETL and DLC certifications

TotalGrow High Intensity Top-Light 345W Bar Features


TotalGrow High Intensity Top-Light 345W Bar with high efficacy lighting output 
High-Efficiency Output

Delivers 907µmol/s with 2.6 µmol/J efficacy, maximizing light output while minimizing energy consumption.


 TotalGrow High Intensity Top-Light 345W Bar with daisy-chain capability
Simplified Installation

Daisy-chain up to 8 units on 240V circuits with 0-10V dimming control for streamlined setup.


 TotalGrow High Intensity Top-Light 345W Bar with side reflector add-on
Uniform Coverage

Optional side reflectors ensure even light distribution to plants at edges, maximizing canopy uniformity.


TotalGrow High Intensity Top-Light 345W Bar with full spectrum light output 
Full Spectrum Performance

Versatile light spectrum promotes healthy growth across all cultivation stages from vegetative to flowering.

TotalGrow High Intensity Top-Light 345W Bar What's In The Box

  • HI-Top 345W light bar
  • 100-277V driver
  • 4 hangers
  • Note: Daisy-chain cords sold separately

TotalGrow High Intensity Top-Light 345W Bar Applications

The TotalGrow High Intensity Top-Light is specifically designed for top-lighting applications in both commercial greenhouses and indoor growing environments. Its narrow profile makes it ideal for mounting to greenhouse structures where minimizing shadowing is critical. The fixture's high efficacy and utility-incentive-friendly design make it particularly well-suited for growers looking to maximize light output while managing operational costs.

TotalGrow High Intensity Top-Light 345W Bar Specifications

Specification Value
Power 345W
Output 907µmol/s
Efficacy 2.6 µmol/J
Dimensions 25" long x 3" tall x 4" wide; 10 lbs
Dimming 0-10V + 12V aux power
Daisy-Chain Linking Up to 4/8 units on 120V/240V (480V alternative version: up to 16 lights)
Lifetime 50,000 hours
Waterproof Rating IP66
Certifications ETL, DLC

TotalGrow High Intensity Top-Light 345W Bar Warranty

The TotalGrow High Intensity Top-Light 345W Bar comes with a comprehensive 5-year manufacturer warranty, protecting your investment against defects in materials and workmanship under normal use conditions.

Shipping & Returns

Order Processing & Shipping

We currently ship within the United States only. No international shipping is available at this time.

Order Processing:

  • Most orders are processed within 24-48 hours after being placed.
  • Some products may have extended processing times of 7-14 business days or more, which will be clearly indicated on the product page. If your order includes such items, you will receive an email from our team or be contacted directly to confirm the estimated shipping timeframe.

Shipping Times:

We partner with reliable national carriers to deliver your orders. While specific delivery times can vary, here's a general timeframe for each carrier:

  • USPS: Typically delivers between 9:00 AM and 5:00 PM, Monday through Saturday.
  • FedEx: Typically delivers between 8:00 AM and 8:00 PM, Monday through Friday, with some Saturday deliveries.
  • UPS: Typically delivers between 9:00 AM and 7:00 PM, Monday through Friday, with some Saturday deliveries.

Note:

  • These are estimated delivery hours and may vary depending on your location and specific delivery circumstances.
  • For the most accurate delivery information, please refer to the tracking details provided once your order has shipped.

Free Shipping

Free shipping on qualified items to the lower 48 states. Some that are not eligible are stated on their respective product information page. Learn more

Refunds & Returns

Cancellations are accepted within 24 hours of placing an order.
Returns are subject to each manufacturer's return policy. Please look into the return policy of the brand prior to ordering. Learn more

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