Growcraft ULTRA – 330W LED Grow Light – Commercial Grade

5.00 out of 5
2 customer reviews
(2 customer reviews)


Temporarily Unavailable

World Leading Full System Efficacy – 3.15+ μmole/J – at Full Output Power! Confirmed By Independent Lab Tests – Review Lab Results

SKU: GC-U-COM-330 Category:

Growcraft ULTRA – Yield Max | Flowering Spectrum


Passive Cooling Linear Bar Design

Thin Profile – Only 1.375in Tall

3,888 5k Samsung Top-bin White LEDs | 216 660nm Top-bin Red LEDs | 4,104 Diodes Total!

Maximum efficacy

Remote Power Driver Location

Lower your heat load by removing power driver outside grow area


Made in the USA – Finest quality materials and workmanship

Input Power Draw: 330W
Input Voltage Range: 90-305 VAC

120 VAC Current Draw: 2.8 Amps
208 VAC Current Draw: 1.6 Amps
240 VAC Current Draw: 1.4 Amps
277 VAC Current Draw: 1.2 Amps

Power Driver: Mean Well HLG-320H-48B
AC Power Cord Length: 6.5 ft
DC Extension Cord Length: 7 ft
Dimming Range: 10-100%

Light Engine Efficacy: 3.31 μmole/J – See Lab Test Report
Power Driver Efficiency: 95% @ 230 VAC
Full System Efficacy: 3.15 μmole/J – See Lab Test Report

Light System LED Information:
3,888 pcs – Samsung 5000K White LEDs
216 pcs – Deep Red 660nm LEDs
4,104 pcs – Total LEDs Per 330W Light System!

Warranty: 5-Year Limited Component Warranty Included

Operating Temperature Range: 41°F – 95°F | 5°C – 35°C
Operating Humidity Range: 10 – 90% Non-Condensing
Generated Heat Load: 1,126 BTU/Hour

Water Protection: Currently the Growcraft has no protective coating against direct moisture exposure. If moisture accumulates near the LEDs damage may occur. Make sure to point any sprays downward and away from the LEDs.

Minimum Head Space Above Fixture: 6 in
Recommended Hanging Height:
12-24 in
Recommended Grow Room Ambient Air Temperature: 85°F | 29.5°C
Coverage Area: 2 x 4 ft
Start Slow – Growcraft lights have VERY high light output and unless your plants are already acclimated to high light intensity, it is best to start slow with the light hanging high and possibly also dimmed. Then monitor plant reaction over a few days and slowly adjust as needed.

Fixture Dimensions: 42.5 in x 19.5 in x 1.375 in
Fixture Weight: 17 Lbs

PAR Intensity Maps

6 in Hanging Height

12 in Hanging Height

18 in Hanging Height

24 in Hanging Height

36 in Hanging Height


Growcraft ULTRA – 330W LED Grow Light Includes:

1 x Fully Assembled Fixture (This Product)
1 x Push-Lock Mean Well HLG-320H-48B LED Driver
1 x Push Lock 7ft Driver Extension Cable
1 x Push Lock AC Power Cord (Your Choice of AC Plug)
1 x Push-Lock Dimmer Pot
2 x 3/16in Rope Ratchet – Metal Mechanism – 2 Pack


Click to Download: PDF User Manual for the X3-330 Growcraft Commercial light




Weight & Dimensions

Weight 17 lbs
Dimensions 42.5 × 19.5 × 1.375 in
Push Lock AC Power Cord

USA 120VAC – NEMA 5-15P (Standard), USA 240VAC – NEMA 6-15P, European – EU1-16P, Australia & New Zealand – AS NZ 3112

2 reviews for Growcraft ULTRA – 330W LED Grow Light – Commercial Grade

  1. 5 out of 5
    2 customer reviews

    Chilled#1 Fan (verified owner)

    The Growcraft Ultra 330 watt light has already proven more efficient than any other horticultural light in the world. I have several ChilledTech growcraft lights and I love them all. However, this one stands out in it’s performance per watt. If you want a powerful light that both your plants AND your power bill will love, you will not hesitate to purchase this light. At maximum brightness it barely runs warmer than room temperature and causes no perceptible increase in my monthly power bill. Money well spent!

  2. 5 out of 5
    2 customer reviews

    Joel Mckeehan

    I pre-ordered this light and am super excited to see what I can do in my 4×4 space. I currently have the Growcraft X3 mini for my 2×2 starter tent and I am impressed with the quality and light output so far. I am currently only running it at 60% power and it is still keeping my plants healthy and happy.

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