Spectrum King 400+ LED Grow Light

Our 450-Watt LED grow light is the perfect solution for indoor growers and gardeners looking to save money and improve their plants’ health and harvest.

  • Full-spectrum 440 Watt LED light made in the USA
  • Specially designed reflectors to fit any application
  • Designed for smaller grow sites and sensitive plants
  • Rugged waterproof housing designed for wet and humid environments
  • Extra efficient heatsinks lower overall ambient room temperature.
  • Safe for outdoor use
  • Nine-foot power cord and one large eyehook for hanging included.
  • Same light intensity as a 1000-Watt high pressure sodium bulb
  • Intense light penetrates deep through top layer for optimum coverage
  • Great for supplemental Greenhouse lighting
  • High performance CREE LED chips.
Item Numbe
Light Source
Input Voltage
110V-277V (480V Optional) AC
Frequency Range
Power Consumption
Recommended Cooling BTUs
Ideal Replacement
1,000W MH/HPS
LED Initial LUX (*60° reflector)
Initial µmol (*90° reflector)
1,950 µmol*
>50,000 Hrs
Light Beam Angle
90 & 120 Degree available
Body Lens
Body Case Material
Die Cast Aluminum
18-1/16? x 12-1/8? x 12-9/16?
Net Weight
10.1 kg (22.2 lbs)
Suitable Distance Over Canopy 90° Reflector
Veg: 42?-54?  Flower: 18?-24?
Suitable Distance Over Canopy 120° Reflector
Veg: 30?-42?  Flower: 12?-18?
Coverage Area Veg
Up to 6? x 6?
Coverage Area Flower
Up to 4? x 4?

Underwriters Laboratories (UL) is a world leading, independent product safety certification organization. The U.S. National Electrical Code requires that lamps and fixtures be tested by a recognized, independent safety-testing agency before they can be legally sold and installed. All lights sold by Spectrum King LED are UL certified and labeled.

RoHS is an European Union based directive insisting that certain substances of very high concern — like cadmium, lead, and mercury — be restricted in the manufacture of electronic devices. Spectrum King LED 400 Series lights are fully RoHS compliant.

Spectrum King LED Manufactures, assembles and tests our entire lineup of full-spectrum LED grow lights in our Canoga Park, California headquarters. We utilize both domestic and foreign parts which meet all required safety standards.

The ETL Mark is proof of product compliance to North American safety standards. Authorities Having Jurisdiction(AHJs) and code officials across the US and Canada accept the ETL Listed Mark as proof of product compliance to published industry standards.

The CE Marking on our grow lights indicates that our products comply with the essential requirements of the relevant European health, safety and environmental protection legislation.

About Spectrum King Grow Lights

Why Your Plants Need Full Spectrum

The key benefit of our LED grow light is its remarkable ability to mimic natural sunlight by emitting a full spectrum of light. Red and blue light wavelengths activate photosynthesis, but are not the only wavelengths plants need. Oversaturating your plants with only red and blue wavelengths actually causes them to go dormant, leading to under produced plants.

With full spectrum, which appears as white light, it induces your plants to undergo natural photorespiration. While that will force them to work harder, it also leads more efficient nutrient intake. You end up with sturdier plants, healthier growth, and increased yields.

Increased Efficiency

The Spectrum King LED 400+ Grow Light offers the same light intensity as a high pressure sodium bulb and offers a lumen output that is comparable to HPS bulbs operating at 1000-Watts to your plant canopy.Better suited for light-hungry plants and strains the 450W LED light is perfect for plants that are particularly sensitive while only using a fraction of the energy. While it offers the same intensity as a 1000-watt HPS bulb, our 450W LED grow light uses only a fraction of electricity while emitting only about 1,350 BTUs of heat. That all equates to big energy savings of over 60% in energy costs and a light that produces less heat than most of the competitors. Those energy savings equate to lower utility bills since your HVAC appliances are used less to combat the high temps common with HPS rooms. A typical return on investment is less than a year for small grows and up to18 months for commercial grow operations.

The 400+ series can be custom fit to your application with different reflectors for maximum coverage and depth. Based on your coverage area and the height of your current plants, you may select from a variety of reflectors, including:

  • 90° reflectors
  • 120° reflectors

Whether you’re growing cannabis for medical dispensaries or tending to an urban garden, lighting is one of the most critical aspects of indoor plant care. Our 450-Watt LED grow light is the perfect solution for indoor growers and gardeners looking to save money and improve their plants’ health and harvest. Spectrum King LED provides you with the lighting solutions you need through our wide array of LED grow lights designed specifically to give your plants natural sunlight quality with full spectrum light to help them thrive.


Spectrum King LED Grow Lights are recognized by the international standard that designates products fit for use in wet and humid conditions. Very few companies that make grow lights qualify for this certification which is why we designed our lights with IP65 ratings in mind as most indoor gardens and commercial greenhouses have wet and humid environments creating challenges for gardeners. Our IP65 housings make clean up easy and you can foliar spray your canopies without worrying about damage to the lights internal components.


Spectrum King offers a Dual Warranty for Light Output and MechanicalIn order to ensure your satisfaction by bringing you great plants and a healthy harvest, Spectrum King LED 400+ grow lights are backed by a DUAL WARRANTY. For added peace of mind, our lights are guaranteed to maintain 90% or better light output for 3 YEARS with regular use plus a 5 YEAR Mechanical warranty on all parts and labor.

Check out our FAQs for more information about our lights, or feel free to contact us if you have any questions. If you’re ready to experience the best 450-Watt LED grow light on the market, take a look at its product description and order today!

Spectrum King 400+ LED Grow Light

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