Growcraft ULTRA – Yield Max | Flowering Spectrum
SPECTRAL POWER DISTRIBUTION

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%
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: 3-Year DIY Kits 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.
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: 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
jimuk (verified owner) –
My electrical knowledge is limited to changing a fuse in a plug. However the DIY assembling this LED light is super easy.
My eyes nearly exploded when i first switched her on.
It’s in a league of it’s own, Excellent build quality, very happy.
Gabrielle –
Thank you for sharing your experience, appreciate you taking the time to do that! Happy to hear that the DIY setup was a breeze for you. We strive our best to make it an easy-going process for our DIYers!
Chris –
Using an X1 Ultra to run a 4×2 with plenty of power. Super bright light and the plants are loving the spectrum
Gabrielle –
Thank you Chris for the review! Happy Growing.
paul blanchard (verified owner) –
I am at 50% power in a 4×4 tent .My plants are in veg.and are blowing up.I have several Growcraft units they are all great but the ultra is a beast,I can tell the light penetration is going to be key for those lower branches.I am certain it will flower most of the 4×4 but i plan on only having a 3×4 canopy for better results.