(SOLD OUT) GMax 300 Dimmable LED Grow Light (LH351H V2) UV/IR

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Canada Orders: Sold Out Until Dec-January

                                    Delivery is 3-6 Business Days from the USA

International Orders: Ships within 1-5 Business Days


          GMax 300 delivers the most advanced Green House LED Grow Light Experience on the Planet. 1 Touch Screen gives you full control over multiple GMAX Lights so you can fine-tune your lighting system with the Programmable Dimmers, Spectrum Control & Auto Sunrise. Your GMax 300 Lighting System is fully versatile to grow any type of plants or Crops at any stage in their life cycles and do it at the highest level of performance possible between the Programmable Dimmers so you can set any level of light intensity for any point during the day & Spectrum Controls.


             GMax 300 is Equipped with the Latest in Horticulture LED Technology from Samsung with their new V2 LH351H  Deep Red LEDs (3.75 umols/J) which weren't expected to hit the mainstream until 2022, LH351H Royal Blue LEDs, and the LM301H full spectrum White light LEDs. GMax 300 sets the new standard for greenhouse-style LED Grow Lights with Double Dimmer Spectrum Control and Controller Ports so you can control all of your lights together from 1 touchscreen and showcase the Auto Sunrise in your grow space.



NEW! Samsung LH351H v2 660nm Deep Red LEDs- 3.75 umols/J

(250)-793-5100 or inquire at Sales@OpticLEDGrowLights.ca 



 *Compatible with the Optic LED Master Controller ($199.00)


Coverage Footprint:


1 Unit                                                

3' x 3' area (.9m x .9m)    

2' x 4' area (.6m x 1.2m)


2 Units                                               

4' x 4' area (1.2m x 1.2m)    

Hanging Height : 

Flower: 10"-24"    

Pro Tips: Wk1-3 @20"-30"  -  Wk4-6 @18"-24"  - Wk7-10 @12"-15" 

Veg: 24" - 30"    (@ 50% Power)

Seedling: 24" (Dimmed Down @ 35%)

Dimmers : 2

Dimmability: 0% - 100%

Dimmer#1 - Deep RED, UV, IR & Warm White LEDs



Dimmer#2 - Royal Blue & Cool White LEDs


GMax 300 Components: 

LEDs: 780 Total

White LEDs: 

 744 Samsung LM301H Horticulture series 3500k  

Bloom Enhancers:

- 24 Samsung LH351H V2 660nm Deep Red LEDs -

- 8 Samsung LH351H 450nm Royal Blues LEDs - 

- 2 IR and 2 UV LEDs

Optics : 

Samsung LM301H White LEDs: 120 Degree Primary Lens

LH351H V2 660nm Deep Reds: 120 Degree Wide Beam Primary Lens 

LH351H 450nm Royal Blues: 120 Degree Wide Beam Primary Lens 

Driver: Meanwell HBG Series Driver

(Built into an Optic Vented Driver Case with Dimmers & Controller Ports)

Thermal management: Passively Cooled


Full Spectrum White Light 3500k (Mixed White Light LEDs) (Full Power on 2 dimmers)

+ 660nm Deep RED 450nm Royal Blue + ultraviolet + Infrared



PPFD Slim GMax 300: 

(Tested with Apogee MQ-500 meter in 3x3 / .9m x .9m Tent)  

10" Hanging Height PPFD: 1,085


18" Hanging Height PPFD: 

Vertical PAR OutPut: 

GMAX 300 Specifications:

HID/HPS Equivalent: 600w HPS

Kelvin: 3500K Daylight White 

IP Rating: IP65 Waterproof - Green House Rated

PAR Efficacy: 3.0 umols/j 

PPF : 2,903 umols

Master Controller: Compatible with Touch Screen Master Controller (2 ports)

Actual Power Draw: 300 Watts

LEDs per Watt: 2.6

Amps: 3 Amps at 120v (1.5Amp @240v)

Lifetime: 100,000 Hours+  

Warranty: 10 Years full warranty - Lifetime warranty on Meanwell Driver

Release Date: August 2021 

Shipping: Free Shipping in Canada and to 30+ countries 

Light Fixtures: GMAX 300

Cables: 6 Foot power cord, rope ratchets, and cables included.

Plug: USA, CANADA, EURO, Commercial, Industrial, etc.

(We automatically ship the correct cord for your country)

Dimming: 0-100% Dimming Capabilities (Dimmer Included)

(Works with external touchscreen Master Controller

Dimensions: 22" x 4.5" x 6"

Fixture Weight: 12lbs

Shipping Weight: 14lbs

Grams Per Watt: up to 2.8

Yield: Up to 840 grams / 30 oz / 1.87lbs

Hanger: Comes with adjustable rope ratchets.

Recommended for: Closet Grow, Cabinet Grow & Grow Tents. & Green Houses

*International Shipments may require Taxes & Duties. Contact us for a quote!

Sales@OpticLEDGrowLights.ca  - GMax 300 Patent Pending.


(250)-880-5200 or inquire at Sales@OpticLEDGrowLights.ca


 *Compatible with the Optic LED Master Controller ($199.00)




Gmax300 in 2x4 tent                             

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