- 1 x NextLight 420H Fixture
- 1 x NextLight h Series Power Cord (10')
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NextLight 420H Full Spectrum LED Grow Light
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VOLUME PRICING
Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are moving to a 3x3 flowering footprint because your current light lacks the intensity to finish the crop.
- You are installing in a small closet because your last fixture ran too hot and required expensive cooling upgrades.
What We Found
- The bright white light makes it much easier to spot color changes in your leaves compared to older purple fixtures.
- We noticed the passive cooling fins stay surprisingly cool even after running the light at full power all day.
What Users Say
- Owners who grow in closets say the silent operation meant they could keep their hobby private without any fan hum.
- Growers in 3x3 tents say plants stay healthy because the low heat output often eliminates the need for an AC unit.
NextLight 420H Full Spectrum LED Grow Light
Finding the right balance of intensity and heat management for a mid-sized grow space can be a challenge. The NextLight 420H is the definitive solution for home growers who need professional-grade performance without the complexity. Designed specifically for 3' x 3' flowering footprints, this fixture delivers high-output full-spectrum light while remaining cool enough for closets and tents. If you need a more compact solution for smaller spaces, the NextLight 150H is also available.
The NextLight 420H is a plug-and-play powerhouse. It features a built-in dimmer to protect young plants from light stress and utilizes passive cooling to eliminate noisy fans. Whether you are scaling up your hobby or starting a dedicated flower room, the 420H provides the sun-like spectrum your plants crave for dense, high-quality yields.
What's Included
Features
☀️
Full-Spectrum
Sun-like bright white light optimized for both vegetative and flowering stages.
📐
Perfect Coverage
Covers up to 5' x 5' for veg and 3' x 3' for high-intensity flowering.
🔌
Plug & Play
Ready to use out of the box with passive cooling and no assembly required.
💧
IP65 Rated
Water-resistant construction ensures durability in humid grow environments.
Specifications
| Specification | Value |
|---|---|
| Energy Use | 420 Watts |
| PPF | 1092 µmol/s |
| Efficiency | 2.6 µmol/j |
| Input Current | 3.5A @ 120V, 1.75A @ 240V |
| Operating Voltage | 120-277 VAC |
| Dimensions | 25" x 24.75" x 3" |
| Weight | 12 lbs (5.44 kg) |
| Warranty | 5 Years Full |
| Environment | IP65 Wet Rated |
Spectrum Analysis
NextLight Full Spectrum LED
NextLight fixtures emit a full spectrum, bright white light which is more sun-like than traditional HPS. This spectrum promotes tighter internodal spacing and superior overall flower quality. By pioneered the use of bright white LED, NextLight provides the sun-like qualities plants love without the excessive heat or energy waste.
Support & Manuals
Warranty
The NextLight 420H is backed by a 5-year full manufacturer's warranty. This covers any defects in material or workmanship, including instances where 20% or more of the LED array fails to illuminate. For advanced control and integration, consider pairing your system with the NextLight Control Pro Controller.
FAQs
What is the coverage area for the NextLight 420H?
The 420H covers a 5' x 5' area for vegetative growth and a 3' x 3' area for high-intensity flowering.
Does this light require an external controller to dim?
No, the NextLight 420H features a built-in dimmer dial, allowing you to adjust intensity manually from 0-100%.
Is the NextLight 420H noisy during operation?
No, it uses passive cooling technology with no moving parts, making it completely silent.
Can this light be used in humid grow tents?
Yes, the fixture is IP65 wet-rated, meaning it is protected against dust and low-pressure water streams from any angle.
How long will the LEDs last?
The 420H has a life rating of Q90 > 50,000 hours, meaning it will maintain at least 90% of its light output after 50,000 hours of use.
Happy To Help
Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
Why Trimleaf
Equipping home growers, craft producers, and commercial operations across North America since 2016.
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Years of Specialist Knowledge
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Over 1,900 Verified Reviews
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