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(Sold Out) Slim 320S NextGen Dimmable LED Grow Light Triple Dimmer (UV + ir) 320w (3500k) LH351H V2

Original price $649.00
Current price $549.00

                                             Sold out until September 

                      USA Orders: 2-5 Business Day Delivery

                      Europe & UK Orders: 7-10 Business Days delivery

                       Outside USA Orders: 7-10 Business Days delivery

          Slim 320S nextgen is true innovation at its finest. Loaded with all your favorite grow tech and features. The new Samsung LH351H Deep RED LEDs rated at 3.75 umols/J And the new Samsung LH351H Royal Blues, Paired with the Samsung Horticulture White LM301H EVO LEDs & LM301H which are above 3.1 umols/J when using at least 5 LEDs per watt. New 3way dimmability upgrade so growers can control the Deep Red, Royal Blue and White LED channels independently.

          Slim 320S NextGen  is equipped with the Best Proven high end components in the industry but is also designed to last twice as long as all other grow lights today. The updated look is jaw dropper with this timeless engineering with the Triple Dimmer RED + (UV & ir) , White and BLUE Dimmers all independently operable. Add the Optic Touch Screen Controller for auto sunrise and manual dimmer settings through the day to mimic mother nature to the fullest extent possible. Unprecedented Light spread in a 2' x 4' (.6m - 1.2m) area with heavy ppfd output and monster yields of boutique quality flower.

    The Optic LED 7" Touchscreen Master controller. The automated sunrise & sunset leads to less plant stress resulting in higher yields, saves you a lot of power cost and reduced air conditioning costs. Most importantly your plants will love you even more.



253-881-1355 or inquire at

- For Commercial Quantities email us for special pricing. 


Coverage Footprint:

Flower:                                           Veg:           

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

Max: 3' x 5' area (.9m x 1.5m)   

Hanging Height & Dimmer Settings :  

Seedling: 48"+    / 25% Power
Vegetative: 48" + / 50% Power (or 24" @ 25% Power)


Wk1-3 - @24-30""     / 50% Power
Wk4-6 @18" - 24"  / 75% Power
Wk7-8 @18" - 24"  / 100% Power
Wk9-10 @12" - 18" / 100% Power
Pro Tips: It's always best to set the light up higher and let the plants grow up into the light.


Slim 320S NextGen Components:

LEDs: 1,500 Total LEDs 

Samsung LM301H 

- New!! 1,440 Top Bin Samsung LM301H Series LEDs + LM301H 3500k Mixed

Bloom Enhancers:

Red LEDs: 40 pcs

- New! Samsung LH351H V2 660nm Deep RED LEDs 3.75 umols/j

Blue LEDs: 16 

- New! Samsung LH351H 450nm Royal Blue - 2.8 umols                


Ultra Violet LEDs: 2 (slightly Dim Purple LED)

- LG UV LED - Proven Increased Resin Production and Potency of oils

Infrared LEDs: 2 (Dim RED LED) 

-Samsung Horticulture Series ir LED - LH351H


Optics: 120 Degree Primary Lens on all LEDs

(Secondary Optics is 120 Degree reflector built into the Heatsink

Drivers: Meanwell Dimmable Driver 0%-100% 

Dimmers: 3 Independent Dimmers

Controller Tech: Fully Compatible - (*Touch Screen Controller is Sold Separately)

3 Way Dimmability - You can Control the 3 Dimmers Independently

Spectrum Control - 2 Way Spectrum Control, add more Blue and White or Red and white light independently or programmed in the timer mode.

Dual Port RJ-11 Controller hookup  - Daisy chain up to 20 lights

Thermal management: Passive Cooling from a significantly Overbuilt extruded Heat sink (Fanless Technology - No Moving Parts) 

*Coolest Operating Temperature of any Bar Light for a 2x4 Grow space

Spectrum:  (Updated Spectrum with stronger flowering performance)

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

+ 660nm Deep RED 450nm Royal Blue + ultraviolet

 (Powerful Spectrum Control leads to healthier plants with lower stress level leading to higher overall production, yield, and flower quality)

PPF/w: 3.3 umols/J

Test in 2' x 4' Area: .6m x 1.2m = .72 Square Meters

PPFD Slim 320S gen3: 

6" Hanging Height PPfd: 1,226

12" Hanging Height PPfd chart

24" Hanging Height PPfd chart

Vertical PAR Output Chart:


Slim 320S Specifications:

Total LEDs : 1,500

Grams Per Watt: up to 3

Yield: Up to 896 grams / 32 / up to 2.0  lbs

HID/HPS equivalency: 750 watts HPS 

Kelvin: 3500K Day Light White 

IP Rating: IP67

LEDs Per Watt:  4.68 Collectively

PPFD @6": 1,226

ppf/w :  3.0 umols/J

ppf :  1550 umols

Actual Max Power Draw: 320 watts max

Amps:  2.8 Amps at 120v ( 1.4 Amps @ 240v)

Voltage : Internationally Used 110 volts - 277volts (240v cord sold separately)

Lifetime: 100,000 Hours+  

Warranty: 7 Years warranty 

Release Date: February 15th 2023

Light Fixture: 42" x 21" Vertical Farming Aluminum BAR Fixture

Cables: 6 detachable power cord 

Plug: USA, CANADA, EURO, Commercial, etc. (240v sold separately)

(We automatically ship the correct cord for your country)

Dimming: 3 Dimmer Knobs 0%-100%. 3-Way Spectrum Control 

Spectrum Control: 3 Dimmer Knobs 0%-100%. 2-Way Spectrum Control 

Touch Screen Master Controller: 2 ports, Fully Compatible. 3 Dimmer control 0%-100%

Fixture Dimensions: 42" x 21" x 4.5" 

Fixture Weight: 18 lbs (Aluminum Fixture + Driver Case)

Shipping Weight: 22 lbs

Hanger: Comes with 4 adjustable rope ratchet hangers.

Recommended for: Grow Tents, Grow Rooms, Greenhouses & Indoor Cultivations. 

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

Slim 320S Gen3 Patent Pending.


253-881-1355 or inquire at

 *Compatible with the Optic LED Master Controller ($149.00)


Also, check out our Instagram page for more videos @OpticLEDGrowLights @OpticLED



Pictures: Slim 320S