Growcraft ULTRA – 600 Watt DIY LED Grow Light Kit


***Does not include AC Infinity Smart Control Kit***

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World Leading Full System Efficacy – 3.19+ μmole/J – at Full Output Power!
       Confirmed By Independent Lab Tests – Review Lab Results

SKU: GC-U-KIT-600 Category:

Growcraft ULTRA – Yield Max | Flowering Spectrum


Passive Cooling Linear Bar Design

Thin Profile – Only 1.375in Tall

7,776 5k Samsung Top-bin White LEDs | 432 660nm Top-bin Red LEDs | 8,208 Diodes Total!

Maximum efficacy

Remote Power Driver Location

Lower your heat load by removing power driver outside grow area


Assembly Instructions Video


Made In The USA – Finest quality materials and workmanship

Input Power Draw: 600W
Input Voltage Range: 90-305 VAC

120 VAC Current Draw: 5 Amps
208 VAC Current Draw: 2.9 Amps
240 VAC Current Draw: 2.5 Amps
277 VAC Current Draw: 2.1 Amps

Power Driver: Mean Well HLG-600H-48B
AC Power Cord Length: 6.5 ft
DC Extension Cord Length: 7 ft
Dimming Range: 5-100%

Light Engine Efficacy: 3.29 μmole/J – See Lab Test Report
Power Driver Efficiency: 96% @ 230 VAC
Full System Efficacy: 3.19 μmole/J – See Lab Test Report

Light System LED Information:
7,776 pcs – Samsung 5000K White LEDs
432 pcs – Deep Red 660nm LEDs
 8,208 pcs – Total LEDs Per 600W Light System

Warranty: 3-Year DIY Kit Warranty Included

Operating Temperature Range: 41°F – 95°F | 5°C – 35°C
Operating Humidity Range: 10 – 90% Non-Condensing
Generated Heat Load: 2,047 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.

Use of VOC (Volatile Organic Compounds): DO NOT USE VOCs, like burning sulfur, near any Growcraft. This can damage the LEDs beyond repair and is NOT covered by our warranty.

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: 4 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 42.5 in x 1.375 in
Fixture Weight: 33.85 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 – 600 Watt DIY LED Grow Light Kit Includes:

2 x Growcraft DIY U-Frame – 4×4
2 x Growcraft DIY U-Frame Cover – 4×4
1 x Growcraft Power Distribution PCB – 4×4
6 x Growcraft 40in Heatsink
6 x Growcraft ULTRA –  40in LED Module Set
1 x M3 – 6mm Plastite PCB Screw – 5 pack
1 x M3 – 8mm Plastite PCB Screw – 25 pack
1 x M3 – 5mm Countersunk Torx Screw – 25 pack
1 x M4 – 14mm Torx Screw – 25 pack
6 x Growcraft PCB End Cover 2 Pack – ChilLED WHITE
1 x Growcraft Strain Relief Cable Gland – Black
1 x 20 AWG Red & Black Solid Core Wire Pair – 6ft
1 x Push Lock 7ft Driver Extension Cable
1 x Push Lock AC Power Cord (Your Choice of AC Plug)
1 x Push-Lock Mean Well HLG-600H-48B LED Driver
1 x Push-Lock Dimmer Pot
1 x Growcraft DIY U-Frame Hole Plug
4 x Rope Ratchets

Complete Step By Step DIY Kit Assembly Instructions

Weight & Dimensions

Weight 46.6 lbs
Dimensions 43.45 × 8.95 × 7.7 in
AC Power Plug

USA 120V (Standard), USA 240V, EU Plug, Australia & New Zealand


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