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TrueSun 4x4 LED Grow Light | Fits 4x4 Grow Space

$999.00 $679.95
(You save $319.05)


Minimize Your Electric Bill. Maximize Your Harvest.

Save up to 50% on energy costs compared to traditional lighting*

TrueSun® LED indoor grow lights were developed in consultation with award-winning master growers. These LEDs save a bundle on electric costs and emit far less heat than traditional MH/HPS lights, delivering energy savings that pay you back starting with your first harvest.

And what a harvest it will be! Our proprietary TrueSun LEDs pamper your plants with the precise spectrum of light they need to grow and thrive. In the final flowering stage, switch on ultraviolet (UV-A) to force resin production and sweeten your yield. Now in our third generation, TrueSun LED grow lights are the best LED grow light for quality, flavor, aroma - and energy savings - every time you grow.

  • Enjoy the most potent, flavorful, aromatic harvest
  • Dramatic cost savings - save up to 50% every month on your electric bill.* The more you grow, the more you save. 
  • Low operating temperature maintains climate without expensive cooling equipment
  • Designed to fit a 4x4 grow tent (or other grow space of similar size)
  • Proprietary LED light spectrum, ideally tuned for indoor gardens
  • Three dedicated switches give your plants the exact wavelengths for each stage of growth
  • Isolated ultraviolet (UV-A) diodes for the best sticky, frosty finish, with no degradation to the unit
  • Proprietary lenses disperse light evenly
  • Silica caps with ceramic brackets for best heat dissipation
  • Best quality manufacturing - heavy duty cabinet, server-grade super-cool fans, and sturdy hangers
  • Lifespan: 50,000+ hours
  • Maintenance-free, no bulbs to replace 
  • ETL Certified
  • Active Thermal Management shuts down unit if internal temperature spikes
  • 5-year warranty
  • Lifetime technical support
  • Purchase includes horticultural support, call us at 888-323-7840 with gardening questions


  • Uses less electricity, smaller carbon footprint
  • Needs less cooling, less air conditioning (fewer pollutants) 
  • Fewer cooling fans also reduce noise pollution
  • Contains no mercury, safer to dispose


  • Dimensions: 21.1 x 13.8 x 5.1 inches / 535 x 345 x 130 mm
  • Weight: 23 lbs / 10.6 kg
  • Power use: 330 watts
  • Voltage: AC 100-277v
  • 132 high-intensity 5-watt LED chips with IR
  • Six LED panels
  • Three UV-A LED (380nm) with glass lens
  • Operating temperature: -4F to ~122F

In the box:

  • BloomBoss TrueSun 4x4 LED Grow Light
  • BloomBoss heavy duty rope ratchet hanging kit
  • Extra long 12-foot universal power cord (AC 100-277v)
  • Quick start guide, with support documentation

Expect the best from the best LED grow light: TrueSun

* Compared to equivalent use of traditional grow lights. Individual results will vary based on conditions, equipment, and local rates

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Shipping & Returns

Free Shipping excludes HI & AK

Shipping Policy

All orders ship within two business days. Free Shipping takes 1 to 5 business days in transit after it is shipped.  Any order over $300 will require a signature upon delivery. We will ship orders to most countries throughout the world. Please email us if you have any questions or would like a shipping quote at We will not be held responsible for lost packages when shipping both domestically and internationally.

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Return Policy

We are pleased to offer all customers a replacement on any defective product within 30 days of purchase. Additionally, any unopened product (Excluding Liquids) may be returned within 30 days of purchase for a refund excluding shipping costs. There is a 10% restocking fee on all returns.  There are No Returns on Liquid Products.

All returns require authorization prior to shipping. Please call us at 888-529-9025 to obtain an RA#(Return Authorization). The RA# must be clearly written on the outside of the shipping box which contains the return. All returns must be sent with freight Prepaid. Any packages sent with shipping due or COD (Charge on Delivery) will be refused.

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund or replacement once we've received and processed the returned item. All returns should be sent to:

NEH, Inc
855 Worcester Rd.
Framingham, MA 01701

Feel free to give us a call at 888-529-9025 if you need any help obtaining a Return Authorization number.

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