NextLight 420h


  •  Free shipping in the USA (lower 48 states)
  •  Ships discreetly
  •  Ships in 1-2 business days


NextLight 420h LED Grow Light

The NextLight 420h is a high efficiency – bright white LED grow light is designed for growers looking to maximize yields in restricted spaces. The NextLight 420h is the most powerful fixture in the NextLight Home Series. The NextLight Home Series is designed for experienced and novice home growers alike. Harnessing the quality and efficiency expected from any NextLight product, including the industry-leading 5 Year Full Warranty.

The NextLight 420h has the power and versatility for all stages of plant growth. The Onboard Dimmer allows you to dial in dimming values from 0-100%, giving you precise control over your desired light intensity. The NextLight 420h is ideal for 3′ x 3′ flower footprint and 5′ x 5′ veg footprint.


  • 420 Watts
  • 2.6 PPF/W (μmol/J)
  • IP65 Wet Rated
  • 5 Year Full Warranty – All Components – Down to the Diode
  • Designed for use in restricted spaces and grow tents
  • Flower Footprint: 3′ x 3′
  • Veg Footprint: 5′ x 5′
  • Onboard Dimming
  • NextLight’s Full Spectrum is recommended from seed to harvest
  • Passively Cooled
  • Plug & Play – contains power cord


NextLight Full Spectrum

NextLight fixtures emit a full spectrum, bright white light which is more sun-like than even your traditional HPS. Using this spectrum you can expect tighter internodal spacing and better overall quality.

Contrary to popular beliefs of the past, NextLight continued to pioneer the use of bright white, full-spectrum LED, which has now become the gold standard of grow lighting.

NextLight’s Full Spectrum is easy to work under and provides the same sun-like qualities plants love without the negatives of high energy requirements and high heat.


Inside a 3′ x 3′ area

  • Flower Footprint: 3′ x 3′
  • PPF: 1092
  • Wattage: 420W
  • PPF/Watt: 2.6
  • Unit Dimensions: 25″ x 24.75″

Inside a 5′ x 5′

  • Veg Footprint: 5′ x 5′
  • PPF: 1092
  • Wattage: 420W
  • PPF/Watt: 2.6
  • Unit Dimensions: 25″ x 24.75″


Additional Info





Model/SKU: NextLight 420h

Wattage Draw: 420 Watts

HPS equivalent: 800 watts

LEDs: Q90 > 50,000 Hours

Spectrum: Full-spectrum white for seed to flower growth

PPF (light output): 1092 umol/s

PPF/Watt: 2.6

BTU Output: 1435

Coverage area:

Vegetative footprint: 5′ x 5′

Flowering footprint: 3′ x 3′

Dimensions: 25″ x 24.75″ x 3″

Operating temperature: -4°F to 104°F (-20°C to 40°C)

Operating/input voltage: 120-277v AC (120v or 240v cord option); 3.5A @ 120V, 1.75A @ 240V

Frequency: 50/60 Hz

Product weight: 12 lbs

Additional details: CE, IP65 wet rated

Product includes: 

Recommended for: Commercial grows, Greenhouses; Soil, hydroponic, aeroponic, or aquaponic systems; Indoor farming or gardening

Manufacturer’s Warranty: 5-years full


There are no reviews yet.

Be the first to review “NextLight 420h”

Your email address will not be published. Required fields are marked *