It has 1350 par at 24 inches away. It covers 5x5 feet max. At 4x4 feet, it has a much higher average par than a 1000w HPS DE and uses only 650 watts instead of 1050 watts. Average par is how you determine how much a light can yield.
This light will replace any light you have and give you greater yields.
Perfect Sun Spectrum is the sun spectrum perfected. For the Max Yield, we made it even more like the sun's spectrum.